编写的一个“手机”的类

  尝试编写一个类，定义一个修饰权限为private的成员变量，定义两个成员方法，一个方法实现为此成员变量赋值，另一个成员方法获取这个成员变量的值，保证其它类继承该类时能获取该类的成员变量的值。

编写的一个手机类：

package org.hanqi.pn0120;

public class Phone {

    private  String pinpai;
    
    private  double neicun;
    
    public String getPinpai() {
        return pinpai;
    }

    public void setPinpai(String pinpai) {
        this.pinpai = pinpai;
    }

    public double getNeicun() {
        return neicun;
    }

    public void setNeicun(double neicun) {
        this.neicun = neicun;
    }
    
    private  double yiyongnc;
    
    public double yiyongnc()
    {
        return  this.yiyongnc;
    }
    
    private  double shengyunc;
    
//    public double shnegyunc()
//    {
//            return  this.shengyunc;
//    }
         
    public void yunxingsudu(double shengyunc )
    {
        if( shengyunc>0)
        {
            System.out.println("手机正常运行,运行速度较快！");
        }
        else if(shengyunc==0)
        {
            System.out.println("手机内存不足，运行速度减慢，请及时清理！");
        }
        else
        {
            System.out.println("表闹了，你手机超神了！");
        }
        
    }
    
    public void xiazai(double yiyongnc)
    {
        double shengyunc=neicun-yiyongnc;
        
        if(yiyongnc>0&&yiyongnc<16)
        {            
            System.out.println("手机剩余内存"+shengyunc+"G");
        }
        else if(yiyongnc==16)
        {
            System.out.println("手机内存不足，剩余"+shengyunc+"G内存");
        }
        else
        {
            System.out.println("手机穿越了！");
        }
        
        
    }

    public Phone(String pinpai, double neicun) {
        super();
        this.pinpai = pinpai;
        this.neicun = neicun;
    }
    
    public  static void  main(String[] args)
    {
        Phone myPhone=new  Phone("iphone5",16);
        
        System.out.println("手机是"+myPhone.getPinpai());
        
        System.out.println("手机内存是"+myPhone.getNeicun()+"G");
        
        myPhone.yunxingsudu(4);
        
        myPhone.yunxingsudu(0);
        
        myPhone.yunxingsudu(20);
        
        myPhone.xiazai(12);
        
        myPhone.xiazai(16);
        
        myPhone.xiazai(25);
    }
    
}