JAVA EE: Java Tutorial : Java method overriding(Instance method preference)

Wednesday, 20 January 2016

Java Tutorial : Java method overriding(Instance method preference)

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Java Tutorial : Java method overriding(Instance method preference)

InterfaceA.java

public interface InterfaceA
{
    default public void sayWelcome()
    {
        System.out.println("Welcome by InterfaceA");
    }
}

Parent.java

public class Parent
{
    public void sayWelcome()
    {
        System.out.println("Welcome by Parent Class");
    }
}

MyClass.java

public class MyClass extends Parent implements InterfaceA
{

}

MethodOverrideTest.java

public class MethodOverrideTest
{

    public static void main(String[] args)
    {
        MyClass myClassObj = new MyClass();
        /*
         * Default methods and abstract methods in interfaces are inherited like
         * instance methods.
         * 
         * Instance methods are preferred over interface default methods.
         */
        myClassObj.sayWelcome();
    }

}

Output