[BAEL-5622] static vs instance initializer block (#12271)

* Deep copy vs Shallow copy Code commit

* Static and instance block

* Deep copy branch chanaged from master to other

* static vs instance block

* Update InstanceBlockExample.java

* Update StaticBlockExample.java

Co-authored-by: Lalit Rajput <lalit.rajput@globallogic.com>
Co-authored-by: paritoshsunny <sams.sunny.16@gmail.com>

core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/initializerblock/instanceblock/InstanceBlockExample.java

@@ -0,0 +1,22 @@
+package com.baeldung.initializerblock.instanceblock;
+
+public class InstanceBlockExample {
+
+    {
+        System.out.println("Instance initializer block 1");
+    }
+    
+    {
+        System.out.println("Instance initializer block 2");
+    }
+    
+    public InstanceBlockExample() {
+        System.out.println("Class constructor");
+    }
+
+    public static void main(String[] args) {
+        InstanceBlockExample iib = new InstanceBlockExample();
+        System.out.println("Main Method");
+    }
+}
+

core-java-modules/core-java-lang-oop-constructors/src/main/java/com/baeldung/initializerblock/staticblock/StaticBlockExample.java

@@ -0,0 +1,17 @@
+package com.baeldung.initializerblock.staticblock;
+
+public class StaticBlockExample {
+
+    static {
+        System.out.println("static block 1");
+    }
+    
+    static {
+        System.out.println("static block 2");
+    }
+
+    public static void main(String[] args) {
+        System.out.println("Main Method");
+    }
+}
+