面向对象实例----看电视

import java.util.Scanner;

public class enum1 {

    public static void main(String[] args) {
        proxyRequst a = new saler();
        a.request();
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        TV hairerTV = new TV();
        hairerTV.setChannel(x);
        System.out.println("卖给用户hairTV目前的频道是："+hairerTV.getChannel());
        Chineses zhangzhi = new Chineses();
        zhangzhi.buyTV(hairerTV);
        System.out.println("zhangzhi开始看电视节目");
        zhangzhi.seeTV();
        int m;
        System.out.print("请输入zhangzhi要看的频道：");
        m = sc.nextInt();
        System.out.println("zhangzhi将买回来的电视更改到"+m+"频道");
        zhangzhi.remoteControl(m);
        System.out.println("现在卖给用户的电视频道是"+hairerTV.getChannel());
        System.out.println("zhangzhi在看电视");
        zhangzhi.seeTV();
    }
}
interface proxyRequst
{
    abstract public void request();
}
class hairerTVFactory implements proxyRequst
{
    public void request()
    {
        System.out.println("我是海尔公司，我想要设置初始频道为：");
    }
}
class saler implements proxyRequst{
    
    private hairerTVFactory a;
    public void request()
    {  
        if(a==null)
        {
            a = new hairerTVFactory();
            a.request();
        }
        
    }
}
class TV
{
    int channel;
    void setChannel(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;    
        default:System.out.println("不能看"+channel+"频道");
    }
    }
}
class Chineses
{
    TV homeTV;
    void buyTV(TV tv)
    {
    homeTV  = tv;
    }
    void remoteControl(int m){
        homeTV.setChannel(m);
    }
    void seeTV(){
        homeTV.showProgram();
        System.out.println("用户买回来的电脑是在"+homeTV.getChannel()+"频道");
    }
    

}