oncommand.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 17 行

package com.javapatterns.command.television;

public class OnCommand implements Command
{
    private Tv myTv;

    public OnCommand(Tv tv)
    {
        myTv = tv;
    }

    public void execute()
    {
        myTv.turnOn();
    }
}