Java Advantage interface to implement polymorphic situations, and the use of interfaces to achieve multiple inheritance!

It is the use, square, rectangle, circle, to inherit the interface all interface, to achieve the case of all.

Talk less nonsense, on the code:

Import Java.util.*;interface s{void S ();} Interface C{void C ();} Interface all extends s,c{//This is the multiple inheritance that implements the interface}class Square implements all{private double length = 1;public void S () {System.out. println ("Square area is:" +length*length);} public void C () {System.out.println ("square perimeter is:" +length*4);}} Class Rectangle implements all{private double length =1;private double width = 2;public void S () {System.out.println ("rectangular area is : "+width*length);} public void C () {System.out.println ("Rectangle circumference is:" + (length+width) * *);}} Class Circle implements All{private double r = 1;public void S () {System.out.println ("Circle area is:" +r*r*3.14);} public void C () {System.out.println ("round perimeter is:" +2*r*3.14);}} public class Sandc {public static void result (all a) {A.S (); A.C ();} public static void Main (string[] args) {result (new Square ()); Result (new Rectangle ()); Result (new Circle ());}}

Print out the results, can be tested, can achieve multiple interface multiplexing, effectively implemented, the mechanism of flushing.

This is, Java example, hope to help everyone!

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Java Advantage interface to implement polymorphic situations, and the use of interfaces to achieve multiple inheritance!