JAVA EE: Java Tutorial : Interface extends Interface

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Java Tutorial : Interface extends Interface

InterfaceA.java

public interface InterfaceA
{
    void sayHi();
}

InterfaceB.java

public interface InterfaceB extends InterfaceA
{
    void sayBye();
}

MyClass.java

public class MyClass implements InterfaceB
{

    @Override
    public void sayHi()
    {
        System.out.println("Hi..");
    }

    @Override
    public void sayBye()
    {
        System.out.println("Bye..");
    }

}

InterfaceTest.java

public class InterfaceTest
{

    public static void main(String[] args)
    {
        InterfaceB interfaceBRef = new MyClass();
        interfaceBRef.sayHi();
        interfaceBRef.sayBye();
    }
}

Output