light.java

来自「Head first design pattern这本经典书的 源码」· Java 代码 · 共 18 行

package headfirst.command.remote;

public class Light {
	String location = "";

	public Light(String location) {
		this.location = location;
	}

	public void on() {
		System.out.println(location + " light is on");
	}

	public void off() {
		System.out.println(location + " light is off");
	}
}