Method Overriding in Java

Author: kishanrajput23

48.Method_Overriding/README.md

@@ -0,0 +1,113 @@
+# Method Overriding in Java
+
+### Method Overriding in Java: 
+- If the child class implements the same method present in the parent class again, it is know as method overriding.
+- Method overriding helps us to classify a behavior that is specific to the child class.
+- The subclass can override the method of the parent class only when the method is not declared as final. 
+- Example :
+- In the below code, we've created two classes: class A & class B.
+- Class B is inheriting class A.
+- In the main() method, we've created one object for both classes. We're running the meth1() method on class A and B objects separately, but the output is the same because the meth1() is defined in the parent class, i.e., class A.
+
+```
+class A{
+    public void meth1() {
+        System.out.println("I am method 1 of class A");
+    }
+}
+
+class B extends A {
+
+}
+public class CWH {
+    public static void main(String[] args) {
+        A a = new A();
+        a.meth1();
+
+        B b = new B();
+        b.meth1();
+    }
+}
+```
+
+```
+Output :
+I am method 1 of class A
+I am method 1 of class A
+```
+
+- Now, let's see how we can override the meth1() for class B :
+
+```
+class A{
+    public void meth1() {
+        System.out.println("I am method 1 of class A");
+    }
+}
+
+class B extends A {
+    @Override
+    public void meth1(){
+        System.out.println("I am method 1 of class B");
+    }
+}
+public class CWH1 {
+    public static void main(String[] args) {
+        A a = new A();
+        a.meth1();
+
+        B b = new B();
+        b.meth1();
+    }
+}
+```
+
+```
+Output :
+I am method 1 of class A
+I am method 1 of class B
+```
+
+### Code as described in the video:
+
+```
+class A {
+    public int a;
+    public int harry() {
+        return 4;
+    }
+    public void meth2() {
+        System.out.println("I am method 2 of class A");
+    }
+}
+
+class B extends A {
+    @Override
+    public void meth2() {
+        System.out.println("I am method 2 of class B");
+    }
+    public void meth3() {
+        System.out.println("I am method 3 of class B");
+    }
+}
+
+public class cwh_48_method_overriding {
+    public static void main(String[] args) {
+        A a = new A();
+        a.meth2();
+
+        B b = new B();
+        b.meth2();
+    }
+}
+```
+
+```
+Output:
+I am method 2 of class A
+I am method 2 of class B
+```
+
+**Handwritten Notes: [Click to Download](https://api.codewithharry.com/media/videoSeriesFiles/courseFiles/java-tutorials-for-beginners-48/JavaChapter10.pdf)**
+
+**Ultimate Java Cheatsheet: [Click To Download](https://api.codewithharry.com/media/videoSeriesFiles/courseFiles/java-tutorials-for-beginners-48/UltimateJavaCheatSheet.pdf)**