client.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 17 行

package com.javapatterns.doubledispatch.mixed;

public class Client
{
    private static Super a;
    private static Super b;

    public static void main(String[] args)
    {
        a = new SubA();
        b = new SubB();

        a.operation(b);
    }
}