Merge branch 'main' into completed

Author: shryhus

0-0-intro/README.md

@@ -26,3 +26,6 @@ _(we know it's silly, but we wanted to give you a simple example 😀)_
 * switch to branch `completed` and **see the correct implementation** of the exercise
 * [join the discussion](https://github.com/bobocode-projects/java-fundamentals-course/discussions) on the GitHub
 * contact us via [email protected]
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

1-0-java-basics/1-3-0-hello-generics/README.MD

@@ -15,15 +15,17 @@ You're supposed to be familiar **Java classes** and **casting**
 * change the **getter return type** to parametrized type ✅
 * refactor `BoxDemoApp` to specify generic type as `Integer` and receive **compile time error** ✅
 
-
----
+##
 
 In many cases the logic we implement does not depend on the data type. In other words, **many algorithms are the same
 regardless if you apply them to Integer, String or any other types.** So in order to leverage the same logic for different 
 types we need some form of type parametrization. Of course, we can use `Object` and store anything we want, but
 it is not safe. Using `Object` requires runtime casting which can cause runtime exceptions.
 
----
+##
 
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
-#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/Q5aEmF8E86fbZ4rXA)
+#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/Q5aEmF8E86fbZ4rXA)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

1-0-java-basics/1-3-1-crazy-generics/README.MD

@@ -26,3 +26,5 @@ runtime to compile time and makes type parametrization safer.**
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/u6kHcecFuzxV232LA)
 
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

1-0-java-basics/1-5-0-hello-annotations/README.MD

@@ -14,3 +14,5 @@ Learn annotations basics to better understand how the frameworks use them 💪
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/UADe1YKHiFVXQJLF8)
 
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

2-0-data-structures-and-algorithms/2-2-1-node/README.MD

@@ -17,4 +17,7 @@ You're supposed to be familiar **Java classes** and **generics**
 
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
-#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/JGTFw5nfwR89tmSbA)
+#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/JGTFw5nfwR89tmSbA)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

2-0-data-structures-and-algorithms/2-2-2-stack/README.md

@@ -23,3 +23,6 @@ stored to the stack.**
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/VgcSYEgm68pzYp6E8) 
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

2-0-data-structures-and-algorithms/2-2-3-linked-queue/README.MD

@@ -13,3 +13,6 @@ You're supposed to be familiar [Queue](https://en.wikipedia.org/wiki/Queue_(abst
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/ps9feaVAUsUT1gA29)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

2-0-data-structures-and-algorithms/2-2-4-linked-list/README.MD

@@ -19,3 +19,5 @@ You're supposed to be familiar [Linked List](https://en.wikipedia.org/wiki/Linke
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/tjCWWmpPHupe7Y8x7)
 
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

2-0-data-structures-and-algorithms/2-2-5-array-list/README.MD

@@ -23,3 +23,6 @@ Build strong skills implementing a well known Array List data structure 💪
 
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/WQPxc7rDFgZK6eEk7)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

2-0-data-structures-and-algorithms/2-2-6-binary-search-tree/README.md

@@ -21,3 +21,5 @@ Learn tree data structures and build strong skills implementing binary search tr
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/7U9XZHuTtT5xpjXR6)
 
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

3-0-java-core/3-6-1-file-reader/README.MD

@@ -14,4 +14,5 @@ You're supposed to know the basics of Stream API and how to work with files in J
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/MAfCxL1JLfY76ki9A)
 
-
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

3-0-java-core/3-6-2-file-stats/README.MD

@@ -17,5 +17,5 @@ You're supposed to know how to work with text files and be able to write Java co
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/jhXEAzG4TB81S43CA)
 
-
-
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

3-0-java-core/3-6-3-crazy-regex/README.MD

@@ -63,5 +63,5 @@ it's called back reference)
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/jhXEAzG4TB81S43CA)
 
-
-
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

4-0-object-oriented-programming/4-3-1-flight-search/README.MD

@@ -23,3 +23,5 @@ You're supposed to be familiar polymorphism and Java interfaces
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/8YUNC2YctwDi7qwP7)
 
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

5-0-functional-programming/5-0-1-lambda-functions-map/README.MD

@@ -13,4 +13,7 @@ Start learning functional programming in Java by writing simple math functions u
 ---
 
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
-#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/TPSCpZAMZvNXYCoA6)
+#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/TPSCpZAMZvNXYCoA6)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

5-0-functional-programming/5-0-2-stream-sum-of-squares/README.MD

@@ -9,4 +9,7 @@ Learn functional programming by refactoring a piece of code using Stream API 
 
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
-#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/7GaNdgTDWhaSh4fc7)
+#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/7GaNdgTDWhaSh4fc7)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

5-0-functional-programming/5-1-1-crazy-lambdas/README.md

@@ -60,3 +60,6 @@ it can help you to simplify the code even more:
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/GcKJyr1fEGaPrrLz8)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

5-0-functional-programming/5-2-1-crazy-streams/README.MD

@@ -14,4 +14,7 @@ To verify your implementation, run `CrazyStreamsTest.java`
 
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
-#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/K1ETyrRybV1RpfHA6) 
+#### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/K1ETyrRybV1RpfHA6)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

5-0-functional-programming/5-3-1-crazy-optionals/README.md

@@ -15,3 +15,6 @@ To verify your implementation, run `CrazyOptionalsTest.java`
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/vkhad17uT7DTWThQ9)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

5-0-functional-programming/5-4-1-fun-prime-numbers/README.MD

@@ -15,3 +15,6 @@ You're supposed to be familiar with Lambdas, Stream API and Optional API
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
 #### ➡️ Have any feedback? – [Please fill the form ](https://forms.gle/ndFEj5xArhTBQaRQA)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

6-0-test-driven-development/6-1-1-stack/README.md

@@ -21,3 +21,6 @@ You're supposed to know [The Three laws of TDD](https://github.com/bobocode-proj
 
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

6-0-test-driven-development/6-1-2-linked-list/README.MD

@@ -27,3 +27,6 @@ You're supposed to know [The Three laws of TDD](https://github.com/bobocode-proj
 
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>

6-0-test-driven-development/6-1-3-binary-search-tree/README.md

@@ -22,3 +22,6 @@ and understand [Recursion](https://en.wikipedia.org/wiki/Recursion_(computer_sci
 
 ---
 #### 🆕 First time here? – [See Introduction](https://github.com/bobocode-projects/java-fundamentals-course/tree/main/0-0-intro#introduction)
+
+##
+<div align="center"><img src="https://raw.githubusercontent.com/bobocode-projects/resources/master/animation/GitHub%20Star_3.gif" height=50/></div>