java上机任务（四）———优快云我又回来了

public class Text {

	/**
	 * 程序入口
	 */
	public static void main(String[] args) {
		Vehicle car1,car2;
		//使用new运算符和默认的构造方法创建对象car1
		car1=new Vehicle();
		//使用new运算符和默认的构造方法创建对象car2
	    car2=new Vehicle();
		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调用speedUp（）方法将自己的speed的值增加80
		car1.speedUp(80);
		//car2调用speedUp（）方法将自己的speed的值增加80
		car2.speedUp(80);
		System.out.println("car1目前的速度："+car1.getSpeed());
		System.out.println("car1目前的速度："+car2.getSpeed());
		car1.speedDown(10);
		car2.speedDown(20);
		System.out.println("car1目前的速度："+car1.getSpeed());
		System.out.println("car1目前的速度："+car2.getSpeed());
		//家中的电视
		Tv haierTv=new Tv();
		//haierTv调用setChannel(int m),并向参数m传递5
		haierTv.setChannal(5);
		System.out.println("haierTv的频道是"+haierTv.getChannel());
		Family zhangsanFamily=new Family();
		//zhangsanFamily调用void buyTv(Tv tv)方法，并将haierTv传递给参数Tv
		zhangsanFamily.buyTv(haierTv);
		System.out.println("zhangsanFamily开始看电视节目");
		zhangsanFamily.seeTv();
		int m=2;
		System.out.println("zhangsanFamily将电视更换到"+m+"频道");
		zhangsanFamily.remoteComtrol(m);
		System.out.println("haierTv的频道是"+haierTv.getChannel());
		System.out.println("zhangsanFamily再看电视节目");
		zhangsanFamily.seeTv();
		//共饮同井水
		//用类名调用setWaterAmount(int m),并向参数传值200
		Village.setWaterAmount(200);
		int leftWater=Village.waterAmount;    //用Village类的类名访问waterAmount
		System.out.println("水井中有"+leftWater+"升水");
		Village zhaoZhuang,maJiaHeZi;
		zhaoZhuang=new Village("赵庄");
		maJiaHeZi=new Village("马家河子");
		zhaoZhuang.setPeopleNumber(80);
		maJiaHeZi.setPeopleNumber(120);
		//zhaoZhuang调用drinkWater（int n）,并向参数传值50
		zhaoZhuang.drinkWater(50);
		leftWater=maJiaHeZi.lookWaterAmount();    //maJiaHeZi调用lookWaterAmount（）
		String name=maJiaHeZi.name;
		System.out.println(name+"发现水井中有"+leftWater+"升水");
		maJiaHeZi.drinkWater(100);
		leftWater=zhaoZhuang.lookWaterAmount();//zhaozhuang调用lookWaterAmount()方法
		name=zhaoZhuang.name;
		System.out.println(name+"发现水井中有"+leftWater+"升水");
		int peopleNumber=zhaoZhuang.getPeopleNumber();
		System.out.println("赵庄的人口："+peopleNumber);
		peopleNumber=maJiaHeZi.getPeopleNumber();
		System.out.println("马家河子的人口："+peopleNumber);
		
		
		// TODO Auto-generated method stub

	}

}
public class Vehicle {
	//声明double型变量speed，刻画速度
	double speed;
	//声明int型变量power，刻画功率
	int power;
	void speedUp(int s){
		//将参数s的值与成员变量speed的和赋值给成员变量speed
		speed=speed+s;
	}
	void speedDown(int d){
		//将成员变量speed与参数d的差赋值给成员变量speed
		speed=speed-d;
	}
	void setPower(int p){
		//将参数p的值赋值给成员变量power
		power=p;
	}
	int getPower(){
		//返回成员变量power的值
		return power;
	}
	double getSpeed(){
		return speed;
	}

}

public class Tv {
	int channel;//电视频道
	void setChannal(int m){
		if(m>=1){
			channel=m;
		}
	}
	int getChannel(){
		return channel;
	}
	void showProgram(){
		switch(channel){
		case 1:System.out.println("综合频道");
		break;
		case 2:System.out.println("经济频道");
		break;
		case 3:System.out.println("文艺频道");
		break;
		case 4:System.out.println("国际频道");
		break;
		case 5:System.out.println("体育频道");
		break;
		default :System.out.println("不能收看"+channel+"频道");
		
		}
	}

}

public class Family {
	Tv homeTv;
	void buyTv(Tv tv){
		//将参数tv赋值给homeTv
		homeTv=tv;
	}
	void remoteComtrol(int m){
		homeTv.setChannal(m);
	}
	void seeTv(){
		homeTv.showProgram();//homeTv调用showProgram()方法
	}

}

public class Village {
	static int waterAmount;//模拟水井的水量
	int peopleNumber;//村庄的人数
	String name;
	Village(String s){
		name=s;
	}
	static void setWaterAmount(int m){
		if(m>0)
			waterAmount=m;
	}
	void drinkWater(int n){
		if(waterAmount-n>=0){
			waterAmount=waterAmount-n;
			System.out.println(name+"喝了"+n+"升水");
		}
		else
			waterAmount=0;
	}
	static int lookWaterAmount(){
		return waterAmount;
	}
	void setPeopleNumber(int n){
		peopleNumber=n;
	}
	int getPeopleNumber(){
		return peopleNumber;
	}
	

}