学习练习 java面向对象封装汽车

 package com.hanqi;

 //汽车
 public class Car {

     // 车牌
     private String CheP;

     // 油箱容量
     private double YouXRL = 40;

     // 总里程数
     private double ZongLC = 0;

     // 油耗
     private double YouH = 10;

     // 当前油量
     private double DangQYL = 0;

     public String getCheP() {
         return CheP;
     }

     public void setCheP(String cheP) {
         CheP = cheP;
     }

     public double getYouXRL() {
         return YouXRL;
     }

     public void setYouXRL(double youXRL) {
         YouXRL = youXRL;
     }

     public double getZongLC() {
         return ZongLC;
     }

     public void setZongLC(double zongLC) {
         ZongLC = zongLC;
     }

     public double getYouH() {
         return YouH;
     }

     public void setYouH(double youH) {

         if(youH >0)
         {
             YouH = youH;
         }
         else
         {
             System.out.println("油耗数据错误");
         }

     }

     public double getDangQYL() {
         return DangQYL;
     }

     public void setDangQYL(double dangQYL) {
         DangQYL = dangQYL;
     }

     public Car(String cheP) {
         super();
         CheP = cheP;
     }

     //方法
     //加油
     public void JiaYou(double youl)
     {
         if(youl < 0 )
         {
             System.out.println("不要偷我的油");
         }
         else if(youl > (YouXRL - DangQYL))
         {
             DangQYL = YouXRL;

             System.out.println("邮箱满了，装不下了");
         }
         else
         {
             DangQYL += youl;

             System.out.println("加油量 = " + youl);
         }
      }
         //加油方法的重载，一次加满
         public  double JiaYou()
         {
             //计算
             double rtn = YouXRL - DangQYL;

             JiaYou(rtn);  //便于代码维护

             return rtn;
         }

     //行驶
     public void XingShi (double licheng)
     {
         if(licheng < 0 )
         {
             System.out.println("车不能这样开");
         }
         else
         {
             //当前油量
             DangQYL -= licheng * YouH /100;

             //总里程
             ZongLC += licheng;
         }

     }

 }

 package com.hanqi;

 public class Test11car {

     public static void main(String[] args) {
         // TODO 自动生成的方法存根

         Car car1 = new Car("鲁c12345");

         car1.setYouXRL(50);

         System.out.println("油箱容量 = " + car1.getYouXRL() );

         car1.JiaYou(40);

         System.out.println("当前油量 = " + car1.getDangQYL());

         car1.JiaYou();

         System.out.println("当前油量 = " + car1.getDangQYL() );

         car1.setYouH(7);

         //行驶

         car1.XingShi(100);

         System.out.println("当前油量 = "+ car1.getDangQYL());
         System.out.println("总里程 = " + car1.getZongLC());

     }

 }