学习练习 java面向对象封装汽车

  1 package com.hanqi;
  2 
  3 //汽车
  4 public class Car {
  5 
  6     // 车牌
  7     private String CheP;
  8     
  9     // 油箱容量
 10     private double YouXRL = 40;
 11     
 12     // 总里程数
 13     private double ZongLC = 0;
 14     
 15     // 油耗
 16     private double YouH = 10;
 17     
 18     // 当前油量
 19     private double DangQYL = 0;
 20 
 21     public String getCheP() {
 22         return CheP;
 23     }
 24 
 25     public void setCheP(String cheP) {
 26         CheP = cheP;
 27     }
 28 
 29     public double getYouXRL() {
 30         return YouXRL;
 31     }
 32 
 33     public void setYouXRL(double youXRL) {
 34         YouXRL = youXRL;
 35     }
 36 
 37     public double getZongLC() {
 38         return ZongLC;
 39     }
 40 
 41     public void setZongLC(double zongLC) {
 42         ZongLC = zongLC;
 43     }
 44 
 45     public double getYouH() {
 46         return YouH;
 47     }
 48 
 49     public void setYouH(double youH) {
 50         
 51         if(youH >0)
 52         {
 53             YouH = youH;
 54         }
 55         else
 56         {
 57             System.out.println("油耗数据错误");
 58         }
 59         
 60     }
 61 
 62     public double getDangQYL() {
 63         return DangQYL;
 64     }
 65 
 66     public void setDangQYL(double dangQYL) {
 67         DangQYL = dangQYL;
 68     }
 69 
 70     public Car(String cheP) {
 71         super();
 72         CheP = cheP;
 73     }
 74     
 75     //方法
 76     //加油
 77     public void JiaYou(double youl)
 78     {
 79         if(youl < 0 )
 80         {
 81             System.out.println("不要偷我的油");
 82         }
 83         else if(youl > (YouXRL - DangQYL))
 84         {
 85             DangQYL = YouXRL;
 86             
 87             System.out.println("邮箱满了，装不下了");
 88         }
 89         else 
 90         {
 91             DangQYL += youl;
 92             
 93             System.out.println("加油量 = " + youl);
 94         }
 95      }
 96         //加油方法的重载，一次加满
 97         public  double JiaYou()
 98         {
 99             //计算
100             double rtn = YouXRL - DangQYL;
101             
102             JiaYou(rtn);  //便于代码维护
103             
104             return rtn;
105         }
106         
107     
108     
109     //行驶
110     public void XingShi (double licheng)
111     {
112         if(licheng < 0 )
113         {
114             System.out.println("车不能这样开");
115         }
116         else
117         {
118             //当前油量
119             DangQYL -= licheng * YouH /100;
120             
121             //总里程
122             ZongLC += licheng;    
123         }
124         
125     }
126     
127     
128     
129     
130     
131     
132     
133     
134     
135 }

 1 package com.hanqi;
 2 
 3 public class Test11car {
 4 
 5     public static void main(String[] args) {
 6         // TODO 自动生成的方法存根
 7 
 8         Car car1 = new Car("鲁c12345");
 9         
10         car1.setYouXRL(50);
11         
12         System.out.println("油箱容量 = " + car1.getYouXRL() );
13             
14         car1.JiaYou(40);
15         
16         System.out.println("当前油量 = " + car1.getDangQYL());
17         
18         car1.JiaYou();
19         
20         System.out.println("当前油量 = " + car1.getDangQYL() );
21         
22         
23         car1.setYouH(7);
24         
25         //行驶
26         
27         car1.XingShi(100);
28         
29         System.out.println("当前油量 = "+ car1.getDangQYL());
30         System.out.println("总里程 = " + car1.getZongLC());
31         
32         
33         
34         
35         
36         
37     }
38 
39 }