个回答

• Desperado_zhh

  2018-10-10 23:32:37

  已采纳

  抽象类car

  import java.util.*;
  public abstract class Car {
   public String name;
   public int num;
   public int person;
   public int loads;
   public int rent;
   public void setNum(int num) {
    this.num=num;
    }
   public int getNum() {
    return num;
    }
   public void setRent(int rent) {
    this.rent=rent;
    }
   public int getRent() {
    return rent;
    }
   public void setPerson(int person) {
    this.person=person;
      }
    public int getPerson() {
     return person;
   }
    public void setLoads(int loads) {
     this.loads=loads;
   }
    public int getLoads() {
     return loads;
   }
    public void setName(String name) {
     this.name=name;
    }
    public String getName() {
     return name;
    }
    
  }
   子类轿车Auto 

  public class Auto extends Car {
    public Auto(int num,String name,int person,int rent) {
        this.setNum(num);
        this.setName(name);
        this.setPerson(person);
        this.setRent(rent);
       }
    public String toString() {
     return (num+"\t"+name+"\t"+"载人"+person+"位"+"\t\t"+rent);
    }
  }   

  子类卡车Truck

  public class Truck extends Car {

  
      public Truck(int num,String name,int loads,int rent) {
       this.setNum(num);
       this.setName(name);
       this.setLoads(loads);;
       this.setRent(rent);
      }
      public String toString() {
     return (num+"\t"+name+"\t"+"载货"+loads+"吨"+"\t\t"+rent);
    }
  }

  子类皮卡Van       

  public class Van extends Car {
     public Van(int num,String name,int person,int loads,int rent) {
        this.setNum(num);
        this.setName(name);
        this.setPerson(person);
        this.setLoads(loads);
        this.setRent(rent);
       }
     public String toString() {
      return (num+"\t"+name+"\t"+"载人"+person+"位，载货"+loads+"吨\t"+rent);
     }
  }

  主程序

  import java.util.Scanner;
  public class Carsys {

      public static void main(String[] args) {
    // TODO Auto-generated method stub
         Scanner input=new Scanner(System.in);
         int rentNum=0;//租车数量
         int rentDay=0;//租车天数
          //初始化车辆列表
    Car cars[]=new Car[6];
    cars[0]= new Auto(1,"奥迪A4",4,500);
    cars[1]= new Auto(2,"马自达6",4,400);
    cars[2]= new Van(3,"皮卡雪6",4,2,450);
    cars[3]= new Auto(4,"金龙",20,800);
    cars[4]= new Truck(5,"松花江",4,400);
    cars[5]= new Truck(6,"依维柯",20,1000);
    cars[0].getName();
       System.out.println("您好！欢迎使用哒哒租车系统");
       while(true) {
       System.out.println("请选择：租车服务输入1,退出系统输入2");
        int a=input.nextInt();
       if(a==2) {
        System.out.println("谢谢使用，再见！");
        break;
        
       }else if(a==1){
        System.out.println("以下是租车列表：");
        System.out.println("编 号"+"\t类 型"+"\t容 量"+"\t\t日租金/天");
        for(Car each:cars) {
         System.out.println(each);
        }
        System.out.println("请输入您要租车的数量");
        rentNum=input.nextInt();
        Car rentCar[]=new Car[rentNum];
        int price=0;
        int totalPerson=0;
        int totalLoads=0;
        for(int i=0;i<rentNum;i++) {
         while(true) {
          System.out.println("请输入第"+(i+1)+"辆车的编号：");
          int b=input.nextInt();
          if(b>6||b<0) {
           System.out.println("输入有误");
          }else {
           rentCar[i]=cars[b-1];
           break;
          }
         }
        }
        for(int i=0;i<rentNum;i++) {
         totalPerson=totalPerson+rentCar[i].person;
        }
        for(int i=0;i<rentNum;i++) {
         totalLoads=totalLoads+rentCar[i].loads;
        }
        System.out.println("请输入租车天数");
        rentDay=input.nextInt();
        for(int i=0;i<rentNum;i++) {
         price=price+rentCar[i].rent*rentDay;
        }
        System.out.println("您的账单如下：");
        System.out.println("***可载人的车有：");
        for(int i=0;i<rentNum;i++) {
         if(rentCar[i].person!=0)
         System.out.println(rentCar[i].name);
        }
        System.out.println("共可载人"+totalPerson+"人");
        System.out.println("***可载货的车有：");
        for(int i=0;i<rentNum;i++) {
         if(rentCar[i].loads!=0)
         System.out.println(rentCar[i].name);
        }
        System.out.println("共可载货"+totalLoads+"吨");
        System.out.println("***租车总价格："+price+"元");
        System.out.println("感谢惠顾，欢迎下次光临！");
        break; 
       }else {
        System.out.println("输入有误，请重新输入");
       }
       }
       input.close();
   }
  }
  

                          
  

  1

• 荆棘的斯布雷斯

  2018-10-22 22:12:54

   public String toString() {
      return (num+"\t"+name+"\t"+"载人"+person+"位，载货"+loads+"吨\t"+rent); 
     }
     
     //这一段我写出来报错了

  
  

  0