Strange Structure of Method Extend

Let see I just built some strange structure of method extend… I want to see how much it can go with different level, where go in where go out. The entrance…

class A {
    public void what() {
        System.out.println("A what");
    }

    public void how() {
        System.out.println("How first?");
    }
}

class B extends A {
    public void how() {
        System.out.print("How second?");
        super.how();
    }
}

class C extends B {
    public void what() {
        System.out.println("C What");
    }

    public void why() {
        System.out.println("Why you want be special leH?");
    }
}

class D extends C {
    public void what() {
        System.out.println("D what");
    }
}

class E extends D {
    public void what() {
        System.out.println("E what");
    }
}

class ExtendMethod {
    public static void main(String args[]) {
        A a = new A();
        a.what();

        C c = new D();
        c.what();

        A someElse = new B();
        someElse.what();

        B someThingElse = new C();
        someThingElse.what();

        B someSpecial = new C();
        //someSpecial.why();

        D someThingSpecial = new E();
        someThingSpecial.why();

        C c2e = new E();
        c2e.how();
    }
}

Java Method Extend

Author: fyhao

Jebsen & Jessen Comms Singapore INTI University College Bsc (Hon) of Computer Science, Coventry University

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