Interface it1

Programs/StudentInterface.java:2–6

package inheritInterface;
interface it1 {
	int x = 10, y = 20;
	public void add(int a, int b);
	public void sub(int a, int b);
}
class arithmOp implements it1 {
	public void add(int p, int q) {
		System.out.println("Addition of two numbers: " +  (p + q));