Public interface icsupa {
??? Public void saya ();
}
Public interface oclassupb {
??? Public void sayb ();
}
Public interface icsup extends icsupa, iClassupb {
??? public void say ();
}
// Do Not Implements Iclassupa Here!
Public class classupa {
??? public void saya () {
????? system.out.println ("Classupa Saya ()");
???}
}
// Here Classup Implements Iclassup, Which Extends Iclassupa and iClassupb.
//
// now the classup's method saya (), Which extended by classupa, is the
//Mplementation of iClassupa # Saya ().
//
// That is to say, Even though classupa.saya () is not the item of
// Iclassupa.SAYA, ITBECOMES The Implementation of iClassupa.SAYA () by ITS
// Descendant Class Classup Through "Extends Classupa Implements Iclassup".
//
// Something Interesting and Somewhat Confusing for Some Large System.
Public Class Classup Extends Classupa Implements Iclassup {
??? // no need to import the iclassupa.saya () here!
?? public void say () {
????? system.out.println ("Classup Say ()");
???}
??? public void sayb () {
????? system.out.println ("Classup Sayb ()");
???}
}
// Test My IDEA.
Public class interfaceAnDClasstest {
??? public static void main (String [] args) {
????? Object cu = new classup ();
????? f i (cu instanceof classupa) {
????????? Classupa mycu = (classupa) cu;
???????? mycu.saya ();
??????}
???}
}
// Result:
// Classupa Saya ()
// Copyright NOTICE:
// you are authorized to copy and use this example
// Non-Commercial Use, Under The Condition That You Keep? The Article's CopyRight
// NOTICE UNCHANGED and SHIP with the NOTICE.
// this article is firstly posted at
//
Http://blog.9cbs.net/reve//******************************************************* ************************************************
* Copyright (C) 2002, 2004 IDSignet.
? * All Rights Reserved.
? * http://www.idsignet.com
? *
? * Created on Jul 6, 2004
? ********************************************************** ***************************** /
/ **
? * @Author Janyckee Joz
? * /
