light.java

来自「Head first design pattern这本经典书的 源码」· Java 代码 · 共 16 行

package headfirst.command.simpleremote;

public class Light {

	public Light() {
	}

	public void on() {
		System.out.println("Light is on");
	}

	public void off() {
		System.out.println("Light is off");
	}
}