编写一个汽车类

package org.hanqi.pn0120;

//汽车
public class Car {
    
    //颜色
    private String yanse;
    
    //品牌
    private String pinpai;
    
    //油箱容量
    private double youxiangrl = 40;
    
    //当前油量
    private double dangqianyl = 0;
    
    public double getDanqianyl()
    {
        return this.dangqianyl;
    }    
    
    //加油
    public void jiaYou(double youliang)
    {
        if (youliang < 0)
        {
            System.out.println("不要偷油");
        }
        else if (this.dangqianyl + youliang > this.youxiangrl)
        {
            //本次加油量
            double bcyl = this.youxiangrl - this.dangqianyl;
            
            this.dangqianyl = this.youxiangrl;
            
            System.out.println("油太多了，已经加满了，这次加了 " + bcyl + "升油");
        }
        else
        {            
            this.dangqianyl += youliang;    
            
            System.out.println("这次加了 " + youliang + " 升油");
        }
    }
    
    //private double youhao = 
    
    private double xingshizlc = 0;
    
    public double getXingshizlc()
    {
        return this.xingshizlc;
    }
    
    //行驶
    public void xingshi(double xingshilc, double youhao)
    {
        //
        if (this.dangqianyl <= 0)
        {
            System.out.println("车没有油，怎么开车");
            
            return;            
        }
        
        if (xingshilc < 0 || youhao < 0)
        {
            System.out.println("不可能这么开车");
        }
        else
        {        
        //油耗
        double dangqyh = xingshilc * youhao / 100;
        
        this.dangqianyl -= dangqyh;
        
        //验证当前油量
        //this.dangqianyl = this.dangqianyl > 0 ? this.dangqianyl : 0;
        
        if(this.dangqianyl < 0)
        {
            this.dangqianyl = 0;
            
            System.out.println("你是推着车吗？");
        }
        
        this.xingshizlc += xingshilc;
        
        System.out.println("本次行驶了 " + xingshilc + " 公里");
        }    
        
    }

    public String getYanse() {
        return yanse;
    }

    public void setYanse(String yanse) {
        this.yanse = yanse;
    }

    public String getPinpai() {
        return pinpai;
    }

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

    public double getYouxiangrl() {
        return youxiangrl;
    }

    public void setYouxiangrl(double youxiangrl) {
        this.youxiangrl = youxiangrl;
    }

    public Car(String pinpai, double youxiangrl) {
        super();
        this.pinpai = pinpai;
        this.youxiangrl = youxiangrl;
    }
    
    //设计模式 - 单例模式（单态模式）
    
    //静态 static
    
    
    //main方法
    public static void main(String[] args)
    {
        
        Car myBenchi = new Car("奔驰", 50);
        
        System.out.println("品牌 = " + myBenchi.getPinpai());
        System.out.println("油箱容量 = " + myBenchi.getYouxiangrl());
        
        myBenchi.xingshi(200, 13);
        
        myBenchi.jiaYou(30);
        
        myBenchi.jiaYou(30);
        

        System.out.println("当前油量 = " + myBenchi.getDanqianyl());
        
        myBenchi.xingshi(300, 15);
        
        System.out.println("当前油量 = " + myBenchi.getDanqianyl());

        myBenchi.xingshi(200, 13);

        System.out.println("当前总里程 = " + myBenchi.getXingshizlc());
        System.out.println("当前油量 = " + myBenchi.getDanqianyl());
        
    }
    

}