步骤1
//空调
public class AirConditioner {
public void on() {
System.out.println("打开空调");
}
public void off() {
System.out.println("关闭空调");
}
}
//电脑
public class Computer {
public void on() {
System.out.println("打开电脑");
}
public void off() {
System.out.println("关闭电脑");
}
}
步骤2
public class RemoteControl {
private AirConditioner conditioner;
private Computer computer;
public RemoteControl() {
super();
this.conditioner = new AirConditioner();
this.computer = new Computer();
}
public void onAll() {
conditioner.on();
computer.on();
}
public void offAll() {
conditioner.off();
computer.off();
}
}
步骤3
RemoteControl control = new RemoteControl();
control.onAll();
System.out.println();
control.offAll();
输出
打开空调
打开电脑
关闭空调
关闭电脑
