add 'Spring Boot' course

content/courses/spring-boot/_index.md

@@ -0,0 +1,36 @@
+---
+# title: Courses
+weight: 3
+---
+
+# Prerequisites
+
+* Solid understanding of Java
+* Object-oriented programming
+* Classes, methods and interfaces
+* Basic understanding of databases
+* Tables, primary keys, foreign keys, relationships, etc.
+* Write basic SQL statements
+
+--- 
+
+# What is a Spring Framework?
+
+**Spring** -- is a popular framework for building Java applications. It has a lot of modules, each designed to handle a specific task. They are combined into few different layers.
+
+![Spring layers](assets/spring-layers.svg) 
+*Img. 1 -- Spring layers*
+
+| **Layer** | **Purpose** |
+| ------------- | -------------- | 
+| *Core* | Handling dependency injection, managing objects |
+| *Web* | Building web applications |
+| *Data* | Working with databases |
+| *AOP* | Aspect oriented programming |
+| *Test* | Testing spring components |
+
+--- 
+
+While the spring framework is powerfull, using it often involves a lot of configuration. For example, if you want to build a web app you might need to setup a web server, configure routing and manage dependencies manually. That's when **Spring Boot** comes in.
+
+You can think of spring boot as a layer on top of the spring framework, that takes care of all of the setup.

public/categories/index.html

@@ -157,6 +157,14 @@
         <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
     
   >Introduction to Programming in Java

public/courses/index.html

@@ -84,7 +84,7 @@
   title=""
   href="/courses"
   
-  class="hx:text-sm hx:contrast-more:text-gray-700 hx:contrast-more:dark:text-gray-100 hx:relative hx:-ml-2 hx:hidden hx:whitespace-nowrap hx:p-2 hx:md:inline-flex hx:items-center hx:gap-1 hx:text-gray-600 hx:hover:text-gray-800 hx:dark:text-gray-400 hx:dark:hover:text-gray-200"
+  class="hx:text-sm hx:contrast-more:text-gray-700 hx:contrast-more:dark:text-gray-100 hx:relative hx:-ml-2 hx:hidden hx:whitespace-nowrap hx:p-2 hx:md:inline-flex hx:items-center hx:gap-1 hx:font-medium"
 ><span class="hx:text-center">Courses</span>
 </a><div class="hextra-search-wrapper hx:relative hx:md:w-64">
   <div class="hx:relative hx:flex hx:items-center hx:text-gray-900 hx:contrast-more:text-gray-800 hx:dark:text-gray-300 hx:contrast-more:dark:text-gray-300">
@@ -158,6 +158,14 @@
         <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
     
   >Introduction to Programming in Java
@@ -210,6 +218,13 @@
           <li class=""><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a></li>
+          <li class=""><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
     
   >Introduction to Programming in Java

public/courses/paradigms/index.html

@@ -157,6 +157,14 @@
         <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
     
   >Introduction to Programming in Java
@@ -210,6 +218,13 @@
           <li class=""><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a></li>
+          <li class=""><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
     
   >Introduction to Programming in Java

public/courses/prog-intro/homeworks/index.html

@@ -154,7 +154,15 @@
   >Courses
         <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
     </a><div class="hx:ltr:pr-0 hx:overflow-hidden">
-        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col open"><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
@@ -207,6 +215,13 @@
 
     <ul class="hx:flex hx:flex-col hx:gap-1 hx:max-md:hidden">
         
+          <li class=""><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a></li>
           <li class="open"><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"

public/courses/prog-intro/index.html

@@ -154,7 +154,15 @@
   >Courses
         <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
     </a><div class="hx:ltr:pr-0 hx:overflow-hidden">
-        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col open"><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hextra-sidebar-active-item hx:bg-primary-100 hx:font-semibold hx:text-primary-800 hx:contrast-more:border hx:contrast-more:border-primary-500 hx:dark:bg-primary-400/10 hx:dark:text-primary-600 hx:contrast-more:dark:border-primary-500"
     href="/courses/prog-intro/"
@@ -207,6 +215,13 @@
 
     <ul class="hx:flex hx:flex-col hx:gap-1 hx:max-md:hidden">
         
+          <li class=""><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a></li>
           <li class="open"><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hextra-sidebar-active-item hx:bg-primary-100 hx:font-semibold hx:text-primary-800 hx:contrast-more:border hx:contrast-more:border-primary-500 hx:dark:bg-primary-400/10 hx:dark:text-primary-600 hx:contrast-more:dark:border-primary-500"

public/courses/prog-intro/lectures/index.html

@@ -154,7 +154,15 @@
   >Courses
         <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
     </a><div class="hx:ltr:pr-0 hx:overflow-hidden">
-        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col open"><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
@@ -207,6 +215,13 @@
 
     <ul class="hx:flex hx:flex-col hx:gap-1 hx:max-md:hidden">
         
+          <li class=""><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a></li>
           <li class="open"><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"

public/courses/prog-intro/lectures/intro/index.html

@@ -182,7 +182,15 @@ It’s fairly easy It has a broad spectre of usage Server Desktop Mobile devices
   >Courses
         <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
     </a><div class="hx:ltr:pr-0 hx:overflow-hidden">
-        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col open"><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"

public/courses/spring-boot/index.html

@@ -0,0 +1,417 @@
+<!DOCTYPE html>
+<html lang="en" dir="ltr"><head><script src="/livereload.js?mindelay=10&amp;v=2&amp;port=1313&amp;path=livereload" data-no-instant defer></script>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="robots" content="noindex, nofollow" />
+  <link rel="icon shortcut" href="/favicon.ico" sizes="32x32" />
+<link rel="icon" href="/favicon.svg" type="image/svg+xml" id="favicon-svg" />
+<link rel="icon" href="/favicon-16x16.png" type="image/png" sizes="16x16" />
+<link rel="icon" href="/favicon-32x32.png" type="image/png" sizes="32x32" />
+<link rel="apple-touch-icon" href="/apple-touch-icon.png" sizes="180x180" />
+<link fetchpriority="low" href="/site.webmanifest" rel="manifest" />
+<title>CodeJava</title>
+  <meta name="description" content="Prerequisites Solid understanding of Java Object-oriented programming Classes, methods and interfaces Basic understanding of databases Tables, primary keys, foreign keys, relationships, etc. Write basic SQL statements What is a Spring Framework?Spring – is a popular framework for building Java applications. It has a lot of modules, each designed to handle a specific task. They are combined into few different layers.
+Img. 1 – Spring layers
+Layer Purpose Core Handling dependency injection, managing objects Web Building web applications Data Working with databases AOP Aspect oriented programming Test Testing spring components While the spring framework is powerfull, using it often involves a lot of configuration. For example, if you want to build a web app you might need to setup a web server, configure routing and manage dependencies manually. That’s when Spring Boot comes in." /><link rel="canonical" href="http://localhost:1313/courses/spring-boot/" itemprop="url" />
+
+<meta property="og:title" content="">
+<meta
+  property="og:description"
+  content="
+    
+      Learn Java programming
+    
+  ">
+<meta
+  property="og:type"
+  content="
+    website
+  ">
+<meta property="og:url" content="http://localhost:1313/courses/spring-boot/">
+
+
+  <meta itemprop="name" content="CodeJava">
+  <meta itemprop="description" content="Prerequisites Solid understanding of Java Object-oriented programming Classes, methods and interfaces Basic understanding of databases Tables, primary keys, foreign keys, relationships, etc. Write basic SQL statements What is a Spring Framework?Spring – is a popular framework for building Java applications. It has a lot of modules, each designed to handle a specific task. They are combined into few different layers.
+Img. 1 – Spring layers
+Layer Purpose Core Handling dependency injection, managing objects Web Building web applications Data Working with databases AOP Aspect oriented programming Test Testing spring components While the spring framework is powerfull, using it often involves a lot of configuration. For example, if you want to build a web app you might need to setup a web server, configure routing and manage dependencies manually. That’s when Spring Boot comes in.">
+  <meta itemprop="wordCount" content="156">
+  <meta name="twitter:card" content="summary">
+  <meta name="twitter:title" content="CodeJava">
+  <meta name="twitter:description" content="Prerequisites Solid understanding of Java Object-oriented programming Classes, methods and interfaces Basic understanding of databases Tables, primary keys, foreign keys, relationships, etc. Write basic SQL statements What is a Spring Framework?Spring – is a popular framework for building Java applications. It has a lot of modules, each designed to handle a specific task. They are combined into few different layers.
+Img. 1 – Spring layers
+Layer Purpose Core Handling dependency injection, managing objects Web Building web applications Data Working with databases AOP Aspect oriented programming Test Testing spring components While the spring framework is powerfull, using it often involves a lot of configuration. For example, if you want to build a web app you might need to setup a web server, configure routing and manage dependencies manually. That’s when Spring Boot comes in.">
+<link href="/css/compiled/main.css" rel="stylesheet" />
+    <link href="/css/variables.css" rel="stylesheet" />
+    <link href="/css/custom.css" rel="stylesheet" />
+
+  
+
+
+  <script>
+    
+
+    function setTheme(theme) {
+      document.documentElement.classList.remove("light", "dark");
+
+      if (theme !== "light" && theme !== "dark") {
+       theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "dark" : "light";
+      }
+
+      document.documentElement.classList.add(theme);
+      document.documentElement.style.colorScheme = theme;
+    }
+
+    setTheme("color-theme" in localStorage ? localStorage.getItem("color-theme") : 'system')
+
+  </script>
+
+  <script>
+    
+
+    if (localStorage.getItem('banner-closed')) {
+      document.documentElement.style.setProperty("--hextra-banner-height", "0px");
+      document.documentElement.classList.add("hextra-banner-hidden");
+    }
+  </script>
+
+  
+  
+  </head>
+<body><div class="hextra-nav-container hx:sticky hx:top-0 hx:z-20 hx:w-full hx:bg-transparent hx:print:hidden">
+  <div
+    class="hextra-nav-container-blur hx:pointer-events-none hx:absolute hx:z-[-1] hx:h-full hx:w-full hx:bg-white hx:dark:bg-dark hx:shadow-[0_2px_4px_rgba(0,0,0,.02),0_1px_0_rgba(0,0,0,.06)] hx:contrast-more:shadow-[0_0_0_1px_#000] hx:dark:shadow-[0_-1px_0_rgba(255,255,255,.1)_inset] hx:contrast-more:dark:shadow-[0_0_0_1px_#fff]"
+  ></div>
+
+  <nav class="hextra-max-navbar-width hx:mx-auto hx:flex hx:items-center hx:justify-end hx:gap-2 hx:h-16 hx:px-6">
+    <a class="hx:flex hx:items-center hx:hover:opacity-75 hx:ltr:mr-auto hx:rtl:ml-auto" href="/">
+    <img class="hx:mr-2 hx:block hx:dark:hidden" src="/images/logo.svg" alt="Logo" height="20" width="20" />
+    <img class="hx:mr-2 hx:hidden hx:dark:block" src="/images/logo.svg" alt="Dark Logo" height="20" width="20" />
+    <span class="hx:mr-2 hx:font-extrabold hx:inline hx:select-none" title="CodeJava">CodeJava</span>
+</a>
+<a
+  title=""
+  href="/courses"
+  
+  class="hx:text-sm hx:contrast-more:text-gray-700 hx:contrast-more:dark:text-gray-100 hx:relative hx:-ml-2 hx:hidden hx:whitespace-nowrap hx:p-2 hx:md:inline-flex hx:items-center hx:gap-1 hx:font-medium"
+><span class="hx:text-center">Courses</span>
+</a><div class="hextra-search-wrapper hx:relative hx:md:w-64">
+  <div class="hx:relative hx:flex hx:items-center hx:text-gray-900 hx:contrast-more:text-gray-800 hx:dark:text-gray-300 hx:contrast-more:dark:text-gray-300">
+    <input
+      placeholder="Search..."
+      class="hextra-search-input hx:focus:hextra-focus hx:block hx:w-full hx:appearance-none hx:rounded-lg hx:px-3 hx:py-2 hx:transition-colors hx:text-base hx:leading-tight hx:md:text-sm hx:bg-black/[.05] hx:dark:bg-gray-50/10 hx:focus:bg-white hx:dark:focus:bg-dark hx:placeholder:text-gray-500 hx:dark:placeholder:text-gray-400 hx:contrast-more:border hx:contrast-more:border-current"
+      type="search"
+      value=""
+      spellcheck="false"
+    />
+    <kbd
+      class="hx:absolute hx:my-1.5 hx:select-none hx:ltr:right-1.5 hx:rtl:left-1.5 hx:h-5 hx:rounded-sm hx:bg-white hx:px-1.5 hx:font-mono hx:text-[10px] hx:font-medium hx:text-gray-500 hx:border hx:border-gray-200 hx:dark:border-gray-100/20 hx:dark:bg-dark/50 hx:contrast-more:border-current hx:contrast-more:text-current hx:contrast-more:dark:border-current hx:items-center hx:gap-1 hx:transition-opacity hx:pointer-events-none hx:hidden hx:sm:flex"
+    >
+      CTRL K
+    </kbd>
+  </div>
+
+  <div>
+    <ul
+      class="hextra-search-results hextra-scrollbar hx:hidden hx:border hx:border-gray-200 hx:bg-white hx:text-gray-100 hx:dark:border-neutral-800 hx:dark:bg-neutral-900 hx:absolute hx:top-full hx:z-20 hx:mt-2 hx:overflow-auto hx:overscroll-contain hx:rounded-xl hx:py-2.5 hx:shadow-xl hx:max-h-[min(calc(50vh-11rem-env(safe-area-inset-bottom)),400px)] hx:md:max-h-[min(calc(100vh-5rem-env(safe-area-inset-bottom)),400px)] hx:inset-x-0 hx:ltr:md:left-auto hx:rtl:md:right-auto hx:contrast-more:border hx:contrast-more:border-gray-900 hx:contrast-more:dark:border-gray-50 hx:w-screen hx:min-h-[100px] hx:max-w-[min(calc(100vw-2rem),calc(100%+20rem))]"
+      style="transition: max-height 0.2s ease 0s;"
+    ></ul>
+  </div>
+</div>
+<button type="button" aria-label="Menu" class="hextra-hamburger-menu hx:cursor-pointer hx:-mr-2 hx:rounded-sm hx:p-2 hx:active:bg-gray-400/20 hx:md:hidden"><svg height=24 fill="none" viewBox="0 0 24 24" stroke="currentColor"><g><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 8H20"></path></g><g><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16H20"></path></g></svg></button>
+  </nav>
+</div>
+
+  <div class='hx:mx-auto hx:flex hextra-max-page-width'>
+    <aside class="hextra-sidebar-container hx:flex hx:flex-col hx:print:hidden hx:md:top-16 hx:md:shrink-0 hx:md:w-64 hx:md:self-start hx:max-md:[transform:translate3d(0,-100%,0)] hx:md:sticky">
+  
+  <div class="hx:px-4 hx:pt-4 hx:md:hidden">
+    <div class="hextra-search-wrapper hx:relative hx:md:w-64">
+  <div class="hx:relative hx:flex hx:items-center hx:text-gray-900 hx:contrast-more:text-gray-800 hx:dark:text-gray-300 hx:contrast-more:dark:text-gray-300">
+    <input
+      placeholder="Search..."
+      class="hextra-search-input hx:focus:hextra-focus hx:block hx:w-full hx:appearance-none hx:rounded-lg hx:px-3 hx:py-2 hx:transition-colors hx:text-base hx:leading-tight hx:md:text-sm hx:bg-black/[.05] hx:dark:bg-gray-50/10 hx:focus:bg-white hx:dark:focus:bg-dark hx:placeholder:text-gray-500 hx:dark:placeholder:text-gray-400 hx:contrast-more:border hx:contrast-more:border-current"
+      type="search"
+      value=""
+      spellcheck="false"
+    />
+    <kbd
+      class="hx:absolute hx:my-1.5 hx:select-none hx:ltr:right-1.5 hx:rtl:left-1.5 hx:h-5 hx:rounded-sm hx:bg-white hx:px-1.5 hx:font-mono hx:text-[10px] hx:font-medium hx:text-gray-500 hx:border hx:border-gray-200 hx:dark:border-gray-100/20 hx:dark:bg-dark/50 hx:contrast-more:border-current hx:contrast-more:text-current hx:contrast-more:dark:border-current hx:items-center hx:gap-1 hx:transition-opacity hx:pointer-events-none hx:hidden hx:sm:flex"
+    >
+      CTRL K
+    </kbd>
+  </div>
+
+  <div>
+    <ul
+      class="hextra-search-results hextra-scrollbar hx:hidden hx:border hx:border-gray-200 hx:bg-white hx:text-gray-100 hx:dark:border-neutral-800 hx:dark:bg-neutral-900 hx:absolute hx:top-full hx:z-20 hx:mt-2 hx:overflow-auto hx:overscroll-contain hx:rounded-xl hx:py-2.5 hx:shadow-xl hx:max-h-[min(calc(50vh-11rem-env(safe-area-inset-bottom)),400px)] hx:md:max-h-[min(calc(100vh-5rem-env(safe-area-inset-bottom)),400px)] hx:inset-x-0 hx:ltr:md:left-auto hx:rtl:md:right-auto hx:contrast-more:border hx:contrast-more:border-gray-900 hx:contrast-more:dark:border-gray-50 hx:w-screen hx:min-h-[100px] hx:max-w-[min(calc(100vw-2rem),calc(100%+20rem))]"
+      style="transition: max-height 0.2s ease 0s;"
+    ></ul>
+  </div>
+</div>
+
+  </div>
+  <div class="hextra-scrollbar hx:overflow-y-auto hx:overflow-x-hidden hx:p-4 hx:grow hx:md:h-[calc(100vh-var(--navbar-height)-var(--menu-height))]">
+    <ul class="hx:flex hx:flex-col hx:gap-1 hx:md:hidden">
+      
+      
+          <li class="open"><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/"
+    
+  >Courses
+        <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
+    </a><div class="hx:ltr:pr-0 hx:overflow-hidden">
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col open"><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hextra-sidebar-active-item hx:bg-primary-100 hx:font-semibold hx:text-primary-800 hx:contrast-more:border hx:contrast-more:border-primary-500 hx:dark:bg-primary-400/10 hx:dark:text-primary-600 hx:contrast-more:dark:border-primary-500"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+  
+    <ul class='hx:flex hx:flex-col hx:gap-1 hx:relative hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:dark:before:bg-neutral-800 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:pr-3 hx:rtl:before:right-0 hx:ltr:ml-3 hx:rtl:mr-3'></ul>
+  
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/"
+    
+  >Introduction to Programming in Java
+        <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
+    </a>
+              <div class="hx:ltr:pr-0 hx:overflow-hidden">
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/homeworks/"
+    
+  >Homeworks
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/lectures/"
+    
+  >Lectures
+        <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
+    </a>
+              <div class="hx:ltr:pr-0 hx:overflow-hidden">
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/lectures/intro/"
+    
+  >Lecture 1. Introduction
+    </a>
+              
+            </li></ul>
+      </div>
+            </li></ul>
+      </div>
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/paradigms/"
+    
+  >Paradgims of Programming
+    </a>
+              
+            </li></ul>
+      </div></li>
+    </ul>
+
+    <ul class="hx:flex hx:flex-col hx:gap-1 hx:max-md:hidden">
+        
+          <li class="open"><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hextra-sidebar-active-item hx:bg-primary-100 hx:font-semibold hx:text-primary-800 hx:contrast-more:border hx:contrast-more:border-primary-500 hx:dark:bg-primary-400/10 hx:dark:text-primary-600 hx:contrast-more:dark:border-primary-500"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a></li>
+          <li class=""><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/"
+    
+  >Introduction to Programming in Java
+        <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
+    </a><div class="hx:ltr:pr-0 hx:overflow-hidden">
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/homeworks/"
+    
+  >Homeworks
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/lectures/"
+    
+  >Lectures
+        <span class="hextra-sidebar-collapsible-button"><svg fill="none" viewBox="0 0 24 24" stroke="currentColor" class="hx:h-[18px] hx:min-w-[18px] hx:rounded-xs hx:p-0.5 hx:hover:bg-gray-800/5 hx:dark:hover:bg-gray-100/5"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" class="hx:origin-center hx:transition-transform hx:rtl:-rotate-180"></path></svg></span>
+    </a>
+              <div class="hx:ltr:pr-0 hx:overflow-hidden">
+        <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/prog-intro/lectures/intro/"
+    
+  >Lecture 1. Introduction
+    </a>
+              
+            </li></ul>
+      </div>
+            </li></ul>
+      </div></li>
+          <li class=""><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/paradigms/"
+    
+  >Paradgims of Programming
+    </a></li>
+        
+      </ul>
+    </div>
+  
+  
+    <div class="  hx:sticky hx:bottom-0 hx:max-h-(--menu-height) hx:bg-white hx:dark:bg-dark hx:mx-4 hx:py-4 hx:shadow-[0_-12px_16px_#fff] hx:flex hx:items-center hx:gap-2 hx:border-gray-200 hx:dark:border-neutral-800 hx:dark:shadow-[0_-12px_16px_#111] hx:contrast-more:border-neutral-400 hx:contrast-more:shadow-none hx:contrast-more:dark:shadow-none hx:border-t" data-toggle-animation="show"><div class="hx:flex hx:grow hx:flex-col"><div class="hx:flex hx:justify-items-start hx:group" data-theme="light">
+  <button
+    title="Change theme"
+    data-state="closed"
+    data-location="bottom"
+    class="hextra-theme-toggle hx:cursor-pointer hx:rounded-md hx:text-left hx:font-medium hx:h-7 hx:px-2 hx:text-xs hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:font-medium hx:text-gray-600 hx:transition-colors hx:dark:text-gray-400 hx:grow"
+    type="button"
+    aria-label="Change theme"
+  >
+    <div class="hx:flex hx:items-center hx:gap-2 hx:capitalize"><svg height=12 class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=system]:hidden" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z"/></svg><span class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=system]:hidden">Light</span><svg height=12 class="hx:group-data-[theme=light]:hidden hx:group-data-[theme=system]:hidden" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"/></svg><span class="hx:group-data-[theme=light]:hidden hx:group-data-[theme=system]:hidden">Dark</span><svg height=12 class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=light]:hidden" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"  fill="currentColor">
+  <path d="M 11.996094,2 C 6.4986225,2.0192368 2.03125,6.5024993 2.03125,12 c 0,5.497501 4.4673725,9.980763 9.964844,10 H 12 12.0039 c 5.497471,-0.01924 9.964844,-4.502499 9.964844,-10 0,-5.4975007 -4.467373,-9.9807632 -9.964844,-10 H 12 Z M 12,4 c 4.417218,0.017598 7.96875,3.5822356 7.96875,8 0,4.417764 -3.551532,7.982402 -7.96875,8 z" />
+</svg>
+<span class="hx:group-data-[theme=dark]:hidden hx:group-data-[theme=light]:hidden">System</span></div>
+  </button>
+  <ul
+    class="hextra-theme-toggle-options hx:hidden hx:z-20 hx:max-h-64 hx:overflow-auto hx:rounded-md hx:ring-1 hx:ring-black/5 hx:bg-white hx:py-1 hx:text-sm hx:shadow-lg hx:dark:ring-white/20 hx:dark:bg-neutral-800"
+    style="position: fixed; inset: auto auto 0px 0px; margin: 0px; min-width: 100px;"
+    data-theme="light"
+  >
+    <li class="hx:flex hx:flex-col">
+      <p
+        data-item="light"
+        class="hx:text-gray-800 hx:dark:text-gray-100 hx:hover:bg-primary-50 hx:hover:text-primary-600 hx:hover:dark:bg-primary-500/10 hx:hover:dark:text-primary-600 hx:relative hx:cursor-pointer hx:whitespace-nowrap hx:py-1.5 hx:transition-colors hx:ltr:pl-3 hx:ltr:pr-9 hx:rtl:pr-3 hx:rtl:pl-9"
+      >
+        Light
+         <span class="hx:absolute hx:inset-y-0 hx:flex hx:items-center hx:ltr:right-3 hx:rtl:left-3 hx:group-data-[theme=dark]:hidden hx:group-data-[theme=system]:hidden"><svg height=1em width=1em xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/></svg></span>
+      </p>
+    </li>
+    <li class="hx:flex hx:flex-col">
+      <p
+        data-item="dark"
+        class="hx:text-gray-800 hx:dark:text-gray-100 hx:hover:bg-primary-50 hx:hover:text-primary-600 hx:hover:dark:bg-primary-500/10 hx:hover:dark:text-primary-600 hx:relative hx:cursor-pointer hx:whitespace-nowrap hx:py-1.5 hx:transition-colors hx:ltr:pl-3 hx:ltr:pr-9 hx:rtl:pr-3 hx:rtl:pl-9"
+      >
+        Dark
+         <span class="hx:absolute hx:inset-y-0 hx:flex hx:items-center hx:ltr:right-3 hx:rtl:left-3 hx:group-data-[theme=light]:hidden hx:group-data-[theme=system]:hidden"><svg height=1em width=1em xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/></svg></span>
+      </p>
+    </li>
+    <li class="hx:flex hx:flex-col">
+      <p
+        data-item="system"
+        class="hx:text-gray-800 hx:dark:text-gray-100 hx:hover:bg-primary-50 hx:hover:text-primary-600 hx:hover:dark:bg-primary-500/10 hx:hover:dark:text-primary-600 hx:relative hx:cursor-pointer hx:whitespace-nowrap hx:py-1.5 hx:transition-colors hx:ltr:pl-3 hx:ltr:pr-9 hx:rtl:pr-3 hx:rtl:pl-9"
+      >
+        System
+         <span class="hx:absolute hx:inset-y-0 hx:flex hx:items-center hx:ltr:right-3 hx:rtl:left-3 hx:group-data-[theme=dark]:hidden hx:group-data-[theme=light]:hidden"><svg height=1em width=1em xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/></svg></span>
+      </p>
+    </li>
+  </ul>
+</div></div></div></aside>
+    
+<nav class="hextra-toc hx:order-last hx:hidden hx:w-64 hx:shrink-0 hx:xl:block hx:print:hidden hx:px-4" aria-label="table of contents">
+    <div class="hextra-scrollbar hx:sticky hx:top-16 hx:overflow-y-auto hx:pr-4 hx:pt-6 hx:text-sm [hyphens:auto] hx:max-h-[calc(100vh-var(--navbar-height)-env(safe-area-inset-bottom))] hx:ltr:-mr-4 hx:rtl:-ml-4"><p class="hx:mb-4 hx:font-semibold hx:tracking-tight">On this page</p><ul></ul><ul></ul>
+      <div class="hx:mt-8 hx:border-t hx:bg-white hx:pt-8 hx:shadow-[0_-12px_16px_white] hx:dark:bg-dark hx:dark:shadow-[0_-12px_16px_#111] hx:sticky hx:bottom-0 hx:flex hx:flex-col hx:items-start hx:gap-2 hx:pb-8 hx:border-gray-200 hx:dark:border-neutral-800 hx:contrast-more:border-t hx:contrast-more:border-neutral-400 hx:contrast-more:shadow-none hx:contrast-more:dark:border-neutral-400">
+        <button aria-hidden="true" id="backToTop" onClick="scrollUp();" class="hx:cursor-pointer hx:transition-all hx:duration-75 hx:opacity-0 hx:text-xs hx:font-medium hx:text-gray-500 hx:hover:text-gray-900 hx:dark:text-gray-400 hx:dark:hover:text-gray-100 hx:contrast-more:text-gray-800 hx:contrast-more:dark:text-gray-50">
+          <span>Scroll to top</span>
+          <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="hx:inline hx:ltr:ml-1 hx:rtl:mr-1 hx:h-3.5 hx:w-3.5 hx:rounded-full hx:border hx:border-gray-500 hx:hover:border-gray-900 hx:dark:border-gray-400 hx:dark:hover:border-gray-100 hx:contrast-more:border-gray-800 hx:contrast-more:dark:border-gray-50">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M4.5 15.75l7.5-7.5 7.5 7.5" />
+          </svg>
+        </button>
+      </div>
+    </div>
+  </nav>
+
+
+    <article class="hx:w-full hx:break-words hx:flex hx:min-h-[calc(100vh-var(--navbar-height))] hx:min-w-0 hx:justify-center hx:pb-8 hx:pr-[calc(env(safe-area-inset-right)-1.5rem)]">
+      <main class="hx:w-full hx:min-w-0 hx:max-w-6xl hx:px-6 hx:pt-4 hx:md:px-12">
+        
+        <div class="content">
+          
+          <h1>Prerequisites</h1><ul>
+<li>Solid understanding of Java</li>
+<li>Object-oriented programming</li>
+<li>Classes, methods and interfaces</li>
+<li>Basic understanding of databases</li>
+<li>Tables, primary keys, foreign keys, relationships, etc.</li>
+<li>Write basic SQL statements</li>
+</ul>
+<hr>
+<h1>What is a Spring Framework?</h1><p><strong>Spring</strong> &ndash; is a popular framework for building Java applications. It has a lot of modules, each designed to handle a specific task. They are combined into few different layers.</p>
+<p><img src="assets/spring-layers.svg" alt="Spring layers"  loading="lazy" />
+<em>Img. 1 &ndash; Spring layers</em></p>
+<table>
+  <thead>
+      <tr>
+          <th><strong>Layer</strong></th>
+          <th><strong>Purpose</strong></th>
+      </tr>
+  </thead>
+  <tbody>
+      <tr>
+          <td><em>Core</em></td>
+          <td>Handling dependency injection, managing objects</td>
+      </tr>
+      <tr>
+          <td><em>Web</em></td>
+          <td>Building web applications</td>
+      </tr>
+      <tr>
+          <td><em>Data</em></td>
+          <td>Working with databases</td>
+      </tr>
+      <tr>
+          <td><em>AOP</em></td>
+          <td>Aspect oriented programming</td>
+      </tr>
+      <tr>
+          <td><em>Test</em></td>
+          <td>Testing spring components</td>
+      </tr>
+  </tbody>
+</table>
+<hr>
+<p>While the spring framework is powerfull, using it often involves a lot of configuration. For example, if you want to build a web app you might need to setup a web server, configure routing and manage dependencies manually. That&rsquo;s when <strong>Spring Boot</strong> comes in.</p>
+<p>You can think of spring boot as a layer on top of the spring framework, that takes care of all of the setup.</p>
+
+        </div>
+        <div class="hx:mt-16"></div>
+        <div class="hx:mt-16"></div>
+        
+      </main>
+    </article>
+  </div>
+
+      <footer class="hextra-footer hx:bg-gray-100 hx:pb-[env(safe-area-inset-bottom)] hx:dark:bg-neutral-900 hx:print:bg-transparent"><div class="hextra-custom-footer hextra-max-footer-width hx:pl-[max(env(safe-area-inset-left),1.5rem)] hx:pr-[max(env(safe-area-inset-right),1.5rem)] hx:text-gray-600 hx:dark:text-gray-400"></div><div
+      class="hextra-max-footer-width hx:mx-auto hx:flex hx:justify-center hx:py-12 hx:pl-[max(env(safe-area-inset-left),1.5rem)] hx:pr-[max(env(safe-area-inset-right),1.5rem)] hx:text-gray-600 hx:dark:text-gray-400 hx:md:justify-start"
+    >
+      <div class="hx:flex hx:w-full hx:flex-col hx:items-center hx:sm:items-start"><div class="hx:font-semibold"><a class="hx:flex hx:text-sm hx:items-center hx:gap-1 hx:text-current" target="_blank" rel="noopener noreferrer" title="Hextra GitHub Homepage" href="https://github.com/imfing/hextra">
+    <span>Powered by Hextra<svg height=1em class="hx:inline-block hx:ltr:ml-1 hx:rtl:mr-1 hx:align-[-2.5px]" viewBox="0 0 180 180" xmlns="http://www.w3.org/2000/svg" fill="currentColor"><path fill-rule="evenodd" clip-rule="evenodd" d="m 105.50024,22.224647 c -9.59169,-5.537563 -21.40871,-5.537563 -31.000093,0 L 39.054693,42.689119 C 29.463353,48.226675 23.55484,58.460531 23.55484,69.535642 v 40.928918 c 0,11.07542 5.908513,21.3092 15.499853,26.84652 l 35.445453,20.46446 c 9.591313,5.53732 21.408404,5.53732 31.000094,0 l 35.44507,-20.46446 c 9.59131,-5.53732 15.49985,-15.7711 15.49985,-26.84652 V 69.535642 c 0,-11.075111 -5.90854,-21.308967 -15.49985,-26.846523 z M 34.112797,85.737639 c -1.384445,2.397827 -1.384445,5.352099 0,7.749927 l 24.781554,42.922974 c 1.38437,2.39783 3.942853,3.87496 6.711592,3.87496 h 49.563107 c 2.76905,0 5.3273,-1.47713 6.71144,-3.87496 l 24.78194,-42.922974 c 1.38414,-2.397828 1.38414,-5.3521 0,-7.749927 L 121.88049,42.814746 c -1.38414,-2.397828 -3.94239,-3.874964 -6.71144,-3.874964 H 65.605944 c -2.768739,0 -5.327223,1.477059 -6.711592,3.874964 z" style="stroke-width:0.774993" /></svg></span>
+  </a></div></div>
+    </div></footer>
+    
+    <script defer src="/js/main.js" integrity=""></script>
+<script defer src="/js/flexsearch.9f5b5908f93ae86f1ecd4b043b799f580c2d1654e703dd9357d568ac41b2547a.js" integrity="sha256-n1tZCPk66G8ezUsEO3mfWAwtFlTnA92TV9VorEGyVHo=" crossorigin="anonymous"></script>
+        <script defer src="/en.search.js" integrity=""></script>
+  </body>
+</html>

public/courses/spring-boot/index.xml

@@ -0,0 +1,18 @@
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <title>CodeJava – </title>
+    <link>http://localhost:1313/courses/spring-boot/</link>
+    <description>Recent content on CodeJava</description>
+    <generator>Hugo -- gohugo.io</generator>
+    <language>en</language>
+    
+	  <atom:link href="http://localhost:1313/courses/spring-boot/index.xml" rel="self" type="application/rss+xml" />
+    
+    
+      
+        
+      
+    
+    
+  </channel>
+</rss>

public/en.search-data.json

@@ -1 +1 @@
-{}
+{"/courses/prog-intro/lectures/intro/":{"data":{"what-does-java-consist-of#What does Java consist of?":"Java consists of multiple main components. The first one being the Java compiler. The process of converting human-readable text to machine code is called compilation.\nImg.2 - Simplified Compilation Process","why-do-we-choose-java#Why do we choose Java?":"Why do we choose Java?According to TIOBE Programming Community Index Java is one of the most demanded languages in the programming field.\nImg. 1 - TIOBE Programming Community Index\nAlso, Java has a lot of advantages for beginners such as:\nIt’s fairly easy It has a broad spectre of usage Server Desktop Mobile devices Smart-cards"},"title":"Lecture 1. Introduction"},"/courses/spring-boot/":{"data":{"prerequisites#Prerequisites":"Prerequisites Solid understanding of Java Object-oriented programming Classes, methods and interfaces Basic understanding of databases Tables, primary keys, foreign keys, relationships, etc. Write basic SQL statements","what-is-a-spring-framework#What is a Spring Framework?":"Spring – is a popular framework for building Java applications. It has a lot of modules, each designed to handle a specific task. They are combined into few different layers.\nImg. 1 – Spring layers\nAt the core we have modules"},"title":"_index"}}

public/index.html

@@ -158,6 +158,14 @@
         <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
     
   >Introduction to Programming in Java

public/sitemap.xml

@@ -5,6 +5,8 @@
     <loc>http://localhost:1313/</loc>
   </url><url>
     <loc>http://localhost:1313/courses/</loc>
+  </url><url>
+    <loc>http://localhost:1313/courses/spring-boot/</loc>
   </url><url>
     <loc>http://localhost:1313/courses/prog-intro/</loc>
   </url><url>

public/tags/index.html

@@ -157,6 +157,14 @@
         <ul class='hx:relative hx:flex hx:flex-col hx:gap-1 hx:before:absolute hx:before:inset-y-1 hx:before:w-px hx:before:bg-gray-200 hx:before:content-[""] hx:ltr:ml-3 hx:ltr:pl-3 hx:ltr:before:left-0 hx:rtl:mr-3 hx:rtl:pr-3 hx:rtl:before:right-0 hx:dark:before:bg-neutral-800'><li class="hx:flex hx:flex-col "><a
     class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
       hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
+    href="/courses/spring-boot/"
+    
+  >Spring Boot
+    </a>
+              
+            </li><li class="hx:flex hx:flex-col "><a
+    class="hx:flex hx:items-center hx:justify-between hx:gap-2 hx:cursor-pointer hx:rounded-sm hx:px-2 hx:py-1.5 hx:text-sm hx:transition-colors [-webkit-tap-highlight-color:transparent] [-webkit-touch-callout:none] [word-break:break-word]
+      hx:text-gray-500 hx:hover:bg-gray-100 hx:hover:text-gray-900 hx:contrast-more:border hx:contrast-more:border-transparent hx:contrast-more:text-gray-900 hx:contrast-more:hover:border-gray-900 hx:dark:text-neutral-400 hx:dark:hover:bg-primary-100/5 hx:dark:hover:text-gray-50 hx:contrast-more:dark:text-gray-50 hx:contrast-more:dark:hover:border-gray-50"
     href="/courses/prog-intro/"
     
   >Introduction to Programming in Java