Java 类和对象12

构造一辆汽车，油箱容量100L，当前里程数0，当前油量0，可以根据道路状况确定油耗,根据行驶速度与行驶时间， 输出当前油量与总里程数。

 public class Car_1 {

     // 车牌
     private String CheP;
     // 邮箱容量 单位：L
     private double YouXRL = 100;
     // 总里程数 单位：km
     private double LiC = 0;
     // 油耗
     private double YouH = 10;
     // 当前油量 单位：L
     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 getLiC() {
         return LiC;
     }

     public void setLiC(double liC) {
         LiC = liC;
     }

     public double getYouH() {
         return YouH;
     }

     public void setYouH(double youH) {
         YouH = youH;
     }

     public double getDangQYL() {
         return DangQYL;
     }

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

     public Car_1(String CheP) {
         this.CheP = CheP;
     }

     // 加油
     public void JiaYou(double youl) {
         if (youl < 0) {
             System.out.println("请不要偷油！");
         } else if (DangQYL + youl > YouXRL) {
             System.out.println("加油量=" + (YouXRL - DangQYL) + "L，油箱已满。");
             DangQYL = YouXRL;
         } else {
             System.out.println("加油量=" + youl+"L");
             DangQYL = DangQYL + youl;
         }
     }

     // 直接加满
     public double JiaYou() {
         double jyl = YouXRL - DangQYL;
         JiaYou(jyl);
         return jyl;
     }

     // 行驶
     public void XingShi(double ShiS, double time) {
         if (ShiS >= 0 && time >= 0) {
             if (DangQYL - YouH * ShiS * time / 100 >= 0) {
                 LiC += ShiS * time;
                 DangQYL -= ShiS * time * YouH / 100;
                 System.out.println("当前油量=" + DangQYL+"L。");
                 System.out.println("行驶里程总数=" + LiC+"km。");
             } else {
                 double sj = DangQYL * 100 / YouH / ShiS;
                 System.out.println("油量不足，按照" + ShiS + "km/h的时速，预计可以行驶" + sj + "小时。");
             }
         } else {
             System.out.println("转速表或时间表出错，请检查！");
         }
     }

     public static void main(String[] args) {
         //构造第一辆车
         Car_1 car1 = new Car_1("鲁C1234");

         car1.JiaYou(10);
         car1.JiaYou();

         car1.setYouH(10);// 根据不同的道路情况设置油耗
         car1.XingShi(180, 1);// 行驶速度与行驶时间
         car1.XingShi(200, 1);
         car1.XingShi(150, 5);
         car1.JiaYou(30);
         car1.XingShi(150, 5);
         car1.XingShi(-150, 5);
         car1.XingShi(150, -3);

     }

运行：