light.java

来自「《JAVA与模式》附书中源代码」· Java 代码 · 共 11 行

package com.javapatterns.command.lightandfan;

public class Light {
        public void turnOn( ) {
                System.out.println("Light is on ");
        }
        public void turnOff( ) {
                System.out.println("Light is off");
        }
}