main

Author: nanawarevishal

11.Classes&Objects/Instance/InstanceBlock/program2.java

@@ -0,0 +1,19 @@
+package Instance.InstanceBlock;
+
+public class program2 {
+
+    int x =90;
+
+    {
+        System.out.println(x);
+    }
+
+
+    void fun(){
+        System.out.println("In fun");
+    }
+
+    public static void main(String[] args) {
+        program2 obj = new program2();
+    }
+}

11.Classes&Objects/Instance/InstanceBlock/program3.java

@@ -0,0 +1,26 @@
+package Instance.InstanceBlock;
+
+public class program3 {
+
+    int x = 10;
+
+    {
+        System.out.println("instatnce block");
+    }
+
+    program3(){
+
+        System.out.println(x);
+        System.out.println("In constructor..!");
+    }
+    
+    public static void main(String[] args) {
+
+        program3 obj = new program3();
+
+    }
+
+    {
+        System.out.println("Second instance block");
+    }
+}

11.Classes&Objects/Static/StaticBlock/program8.java

@@ -0,0 +1,15 @@
+
+package Static.StaticBlock;
+
+public class program8 {
+    
+    static {
+        // a= 90;
+        System.out.println(a);
+    }
+    public static void main(String[] args) {
+        System.out.println(a);
+    }
+    
+    static int a =20;
+}

12.Inheritance/InstanceInParent/InheritanceClassCodes/program4.java

@@ -14,6 +14,7 @@ void access(){
 
 class child4 extends Parent4{
     int y = 20;
+    int x =90;
     child4(){
 
         System.out.println("In child Constructor");
@@ -27,6 +28,7 @@ class client4{
     public static void main(String[] args) {
         child4 obj = new child4();
         obj.access();
+        
 
     }
 }

12.Inheritance/StaticInParent/program6.java

@@ -49,8 +49,9 @@ void access(){
 
 class client6{
     public static void main(String[] args) {
-        child6 obj = new child6();
-
+        Parent6 obj = new child6();
+        System.out.println(obj.x);
+        System.out.println(obj.y);
         // obj.access();
     }
 }

13.Polymorphism/MethodOverriding/28_overriding.java

@@ -0,0 +1,25 @@
+package MethodOverriding;
+
+class Parent28{
+    int x =10;
+
+    static int y =20;
+
+}
+
+class Child28 extends Parent28{
+
+    int x =90;
+
+    static int y =30;
+}
+
+class Client28{
+
+    public static void main(String[] args) {
+        Parent28 obj = new Child28();
+        System.out.println(obj.x);
+        System.out.println(obj.y);
+        
+    }
+}

15.InnerClass/AnnonymousIC/Normal/2_annonymous.java

@@ -0,0 +1,41 @@
+package AnnonymousIC.Normal;
+
+
+class Demo2{
+
+    int x =10;
+
+    void marry(){
+
+        System.out.println("Kriti Sanon");
+    }
+}
+
+
+class Client2{
+
+    public static void main(String[] args) {
+        
+        Demo2 obj = new Demo2(){   // Demo2 obj = new Client2$1(); // Internally
+            int x =20;
+            private int y =20;
+
+            void marry(){
+                System.out.println("Nupoor Sanon");
+            }
+
+            Demo2 fun(){
+                System.out.println("In fun");
+                return new Demo2();
+            }
+            
+        }.fun();
+
+        obj.marry();
+
+        System.out.println(obj.x);
+        
+        
+    }
+
+}

15.InnerClass/NormalIC/10_normal.java

@@ -0,0 +1,33 @@
+package NormalIC;
+
+class Outer10{
+
+    int z =20;
+    static int x =10;
+
+    class Inner10{
+
+        int z =30;
+        static int y =90;    // In version 8 - 11 not allowed
+
+
+        void fun(){
+            System.out.println(z);
+        }
+    }
+}
+
+class Client10{
+
+    public static void main(String[] args) {
+
+        Outer10 obj1 = new Outer10();
+
+        System.out.println(obj1.new Inner10().y);   // to fill the constructor with this and this$0 of inner class
+
+        Outer10.Inner10 obj = new Outer10().new Inner10();
+        System.out.println(obj.y);
+
+        System.out.println(Outer10.Inner10.y);
+    }
+}

15.InnerClass/NormalIC/7_Normal.java

@@ -2,8 +2,30 @@
 
 class Outer7{
 
+    private int x =10;
+
+    Outer7(){
+
+    }
+
+
+
     class Inner7{
 
+        int x =90;
+
+
+        Inner7(int x){
+            System.out.println(x);
+        }
+
+        Inner7(){
+            System.out.println("Inner this reference: "+this);
+            System.out.println("Outer this reference: "+Outer7.this);
+            System.out.println("Outer class variable: "+Outer7.this.x);
+            System.out.println(x);
+        }
+
         void fun2(){
 
             System.out.println("Inner fun");
@@ -19,7 +41,12 @@ void fun1(){
 class client7{
 
     public static void main(String[] args) {
-        Outer7.Inner7 obj = new Outer7().new Inner7();
+
+        Outer7 obj1 = new Outer7();
+        System.out.println("Outer obj: "+obj1);
+        Outer7.Inner7 obj =obj1.new Inner7();
+
+        System.out.println("Inner obj: "+obj);
 
     }
 }

15.InnerClass/NormalIC/8_normal.java

@@ -0,0 +1,17 @@
+package NormalIC;
+
+class Outer8{
+
+    class Inner8{
+
+        class Innerin8{
+            
+        }
+    }
+}
+
+class client8{
+    public static void main(String[] args) {
+        Outer8.Inner8.Innerin8 obj  = new Outer8().new Inner8().new Innerin8();
+    }
+}

15.InnerClass/NormalIC/9_normal.java

@@ -0,0 +1,20 @@
+package NormalIC;
+
+class Outer9{
+
+    int x = 10;
+    int y = 20;
+    
+    void m1(){
+
+        int a =30;
+        // static int b =30;  Error
+        // final static int b =30;   Error
+    }
+
+    public static void main(String[] args) {
+        int p = 50;
+        // static int q = 60;   Error
+
+    }
+}