Hi Friend,

Yes an interface can be extended by other interface like using extends keyword

interface A{ }

interface B extends A{ }

For Example:

interface IntefaceA {
  void method1();
  void method2();
}
interface IntefaceB extends IntefaceA {
  void method3();
}
class InterfaceExample implements IntefaceB {
  public void method1() {
    System.out.println("Method1.....");
  }
  public void method2() {
    System.out.println("Method2.....");
  }
  public void method3() {
    System.out.println("Method3.....");
  }
  public static void main(String arg[]) {
    InterfaceExample ex = new InterfaceExample();
    ex.method1();
    ex.method2();
    ex.method3();
  }
}

Thanks