hottuboffcommand.java

来自「深入浅出设计模式」· Java 代码 · 共 18 行

package headfirst.command.party;

public class HottubOffCommand implements Command {
	Hottub hottub;

	public HottubOffCommand(Hottub hottub) {
		this.hottub = hottub;
	}

	public void execute() {
		hottub.setTemperature(98);
		hottub.off();
	}
	public void undo() {
		hottub.on();
	}
}