租车升级系统

package carrentalcompany;

public class saloon {         //父类   方法类
        private String pinpai;         //品牌
        private String chepai;         //车牌
        private String xinghao;         //型号
        private int    money;            //价格
        private double  sum;             //总金额

        public int getMoney() {
            return money;
        }
        public void setMoney(int money) {
            this.money = money;
        }
        public double getSum() {
            return sum;
        }
        public void setSum(double sum) {
            this.sum = sum;
        }
        public String getXinghao() {
            return xinghao;
        }
        public void setXinghao(String xinghao) {
            this.xinghao = xinghao;
        }
        public String getPinpai() {
            return pinpai;
        }
        public void setPinpai(String pinpai) {
            this.pinpai = pinpai;
        }
        public String getChepai() {
            return chepai;
        }
        public void setChepai(String chepai) {
            this.chepai = chepai;
        }
        void showinfo(){
            System.out.println("品牌"+"\t\t车牌"+"\t\t型号"+"\t\t价格");
            System.out.println(getPinpai()+"\t\t"+getChepai()+"\t\t"+getXinghao()+"\t\t"+getMoney());
        }

}

package carrentalcompany;

public class coach {               //添加车数
	int money;
	int sum;
	saloon[] sal=new saloon[5];
	public	void cos(saloon salo){
		for(int i=0;i<sal.length;i++){
		if(sal[i]==null){
			sal[i]=salo;
			break;
		}

	}
  }
	public	void showCoach(){      //数出车数
		System.out.println();
		for(int i=0;i<sal.length;i++){
			if(sal[i]!=null){
				sal[i].showinfo();
			}
		}
	}
	public void add(int boay){     // 赋值    轿车 的宝马
		int money=300;
		this.money=boay*money;
		saloon sal1=new saloon();

		sal1.setChepai("京NY2858");
		sal1.setPinpai("宝马");
		sal1.setXinghao("550i");
		sal1.setMoney(this.money);
		 sum+=this.money;
		cos(sal1);
	}
	public  void bie(int boay){      //赋值   轿车 的别克
		int money=350;
		this.money=boay*money;
		 saloon sal2=new saloon();
		 sal2.setPinpai("别克");
		 sal2.setChepai("京NY2858");
		 sal2.setXinghao("550i");
		 sal2.setMoney(this.money);
		 sum+=this.money;
     	cos(sal2);
	 }
	 public	void jin(int boay){      //赋值   金杯
		 int money=500;
			this.money=boay*money;
		saloon sal3=new saloon();
		 sal3.setPinpai("金杯");
		 sal3.setChepai("FY8668");
		 sal3.setXinghao("670t");
		 sal3.setMoney(this.money);
		 sum+=this.money;
     	cos(sal3);
	}
public	void lon(int boay){    //赋值   金龙
	int money=400;
	this.money=boay*money;
		saloon sal4=new saloon();
		 sal4.setPinpai("金龙");
		 sal4.setChepai("京Ni4444");
		 sal4.setXinghao("777b");
		 sal4.setMoney(this.money);
		 sum+=this.money;
     	cos(sal4);
	}
public	void ka(int boay){     //赋值   大型卡车
	int money=1000;
	this.money=boay*money;
	saloon sal4=new saloon();
	 sal4.setPinpai("大型卡车");
	 sal4.setChepai("京Ni4444");
	 sal4.setXinghao("568j");
	 sal4.setMoney(this.money);
	 sum+=this.money;
 	cos(sal4);
   }
public	void kas(int boay){    // 赋值   中型卡车
	int money=800;
	this.money=boay*money;
	saloon sal4=new saloon();
	 sal4.setPinpai("中型卡车");
	 sal4.setChepai("京Ni4444");
	 sal4.setXinghao("375a");
	 sal4.setMoney(this.money);
	 sum+=this.money;
 	cos(sal4);
    }
public void sums(){
	System.out.println("总金额是："+this.sum);

     }
}

package carrentalcompany;

import java.util.Scanner;

public class TestCar {
	public static void main(String[] alg){
		Scanner in=new Scanner(System.in);
	coach c=new coach();
	boolean  fale=true;
	while(fale){
	System.out.println("欢迎来到租车公司！");
	System.out.println("请输入要租车的天数：");
	int tian=in.nextInt();
	System.out.println("请输入你要租的汽车类型：1-轿车，2-客车，3-卡车,0-结束");
	int x=in.nextInt();
	if(x==1){//轿车
		System.out.println("请输入要租的品牌：1-宝马，2-别克");
		int b=in.nextInt();
		if(b==1){//宝马
			c.add(tian);
			c.showCoach();

		}else if(b==2){ //别克
			c. bie(tian);
			c.showCoach();
		}
	}else if(x==2){//客车
		System.out.println("请输入要租的品牌：1-金杯，2-金龙");
		int b=in.nextInt();
		if(b==1){
			c.jin(tian);
			c.showCoach();
		}else if(b==2){
			c.lon(tian);
			c.showCoach();
		}
	}else if(x==3){       //卡车
		System.out.println("请输入要租的品牌：1-大型卡车，2-中型卡车");
		int b=in.nextInt();
		if(b==1){
			c.ka(tian);
			c.showCoach();
		}else if(b==2){
			c.kas(tian);
			c.showCoach();
		 }
	  }
	   if(x==0){
		fale=false;
		c.sums();
		System.out.println("品牌"+"\t\t车牌"+"\t\t型号"+"\t\t价格");
	}
    }
  }
}