Java Object

Example that has been given below shows the method overriding, in Java. In java, method overriding is a subclass method that overrides the super class method. Extend keywords are used by the subclass for extension of the super class. In the example, Class B is present in the subclass. Class A is present in super class. Overriding method of superclass & subclass has similar signatures. Methods of the superclass are being modified by using overriding.

Java Code:

class A {
int i;
A(int a, int b) {
i = a+b;
}
void add() {
System.out.println("Sum of a and b is: " + i);
}
}
class B extends A {
int j;
B(int a, int b, int c) {
super(a, b);
j = a+b+c;
}
void add() {
super.add();
System.out.println("Sum of a, b and c is: " + j);
}
}
class MethodOverriding {
public static void main(String args[]) {
B b = new B(10, 20, 30);
b.add();
}
}