编写的一个“手机”的类

Posted 2020-06-18 安然罒

  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：

  1 package org.hanqi.pn0120;
  2 
  3 public class Phone {
  4 
  5     private  String pinpai;
  6     
  7     private  double neicun;
  8     
  9     public String getPinpai() {
 10         return pinpai;
 11     }
 12 
 13     public void setPinpai(String pinpai) {
 14         this.pinpai = pinpai;
 15     }
 16 
 17     public double getNeicun() {
 18         return neicun;
 19     }
 20 
 21     public void setNeicun(double neicun) {
 22         this.neicun = neicun;
 23     }
 24     
 25     private  double yiyongnc;
 26     
 27     public double yiyongnc()
 28     {
 29         return  this.yiyongnc;
 30     }
 31     
 32     private  double shengyunc;
 33     
 34 //    public double shnegyunc()
 35 //    {
 36 //            return  this.shengyunc;
 37 //    }
 38          
 39     public void yunxingsudu(double shengyunc )
 40     {
 41         if( shengyunc>0)
 42         {
 43             System.out.println("手机正常运行,运行速度较快！");
 44         }
 45         else if(shengyunc==0)
 46         {
 47             System.out.println("手机内存不足，运行速度减慢，请及时清理！");
 48         }
 49         else
 50         {
 51             System.out.println("表闹了，你手机超神了！");
 52         }
 53         
 54     }
 55     
 56     public void xiazai(double yiyongnc)
 57     {
 58         double shengyunc=neicun-yiyongnc;
 59         
 60         if(yiyongnc>0&&yiyongnc<16)
 61         {            
 62             System.out.println("手机剩余内存"+shengyunc+"G");
 63         }
 64         else if(yiyongnc==16)
 65         {
 66             System.out.println("手机内存不足，剩余"+shengyunc+"G内存");
 67         }
 68         else
 69         {
 70             System.out.println("手机穿越了！");
 71         }
 72         
 73         
 74     }
 75 
 76     public Phone(String pinpai, double neicun) {
 77         super();
 78         this.pinpai = pinpai;
 79         this.neicun = neicun;
 80     }
 81     
 82     public  static void  main(String[] args)
 83     {
 84         Phone myPhone=new  Phone("iphone5",16);
 85         
 86         System.out.println("手机是"+myPhone.getPinpai());
 87         
 88         System.out.println("手机内存是"+myPhone.getNeicun()+"G");
 89         
 90         myPhone.yunxingsudu(4);
 91         
 92         myPhone.yunxingsudu(0);
 93         
 94         myPhone.yunxingsudu(20);
 95         
 96         myPhone.xiazai(12);
 97         
 98         myPhone.xiazai(16);
 99         
100         myPhone.xiazai(25);
101     }
102     
103 }

Phone