Java

public class User {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//Vehic car1,car2;
		Vehic car1=new Vehic();
		Vehic car2=new Vehic();
		car1.setpower(128);
		car2.setpower(76);
		System.out.println("car1的功率是："+car1.getpower());
		System.out.println("car2的功率是："+car2.getpower());
		car1.speedup(80);
		car2.speedup(80);
		System.out.println("car1的速度是："+car1.getspeed());
		System.out.println("car1的速度是："+car1.getspeed());
		car1.speedown(10);
		car2.speedown(20);
		System.out.println("car1的速度是："+car1.getpower());
		System.out.println("car1的速度是："+car1.getpower());
	}
}



public class Vehic {
		double speed;//速度
		int power;//功率
		void speedup(int s){
			//减速功率
			power=power+s;
		}
		
		void speedown(int b){
			//减速功能
			power=power-b;
		}
		
		
		void setpower(int n){
			//设置功率
			power=n;
		}
		int getpower(){
			//获取功
			return power;
		}
		double getspeed(){
			//返回功率
			return speed;
		}
		
		
}



public class Family {
	T homeTV;
	void buyTV(T tv){
		homeTV=tv;
	}
	void remotecontrol(int m){
		homeTV.setchannel(m);
	}
	void seeTV(){
		homeTV.showprogram();
	}
}


public class Main {

	public static void main(String[] args) {
	T haierTV=new T();
	haierTV.setchannel(5);
	System.out.println("haierTV看的频道是："+haierTV.getchannel());
	Family zhangsanfamily=new Family();
	System.out.println("不能收看"+channel+"频道");
	zhangsanfamily.seeTV();
	int m=2;
	System.out.println("zhangsanfamily将频道更换为："+m+"频道");
	zhangsanfamily.remotecontrol(m);
	System.out.println("不能收看"+channel+"频道");
	}

}



public class T {
	int channel;
	void setchannel(int s){
		if(s>=1){
			channel=s;
			
		}
	}
	int getchannel(){
		return channel;
	}
	void showprogram(){
		switch(channel){
		case 1 : System.out.println("综合频道");
		case 2 : System.out.println("经济频道");
		case 3 : System.out.println("文艺频道");
		case 4 : System.out.println("国际频道");
		case 5 : System.out.println("体育频道");
		default: System.out.println("不能收看"+channel+"频道");
		
		}
	}

}