达达租车测试类，不足之处请指点

/*

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  */
  package test;
  import java.util.Arrays;
  /*
  汽车父类
• @author Administrator
  */
  public class Cars {
  private String name;//汽车名
  private int price;//价钱
  private int peopleTotal;//载人量
  private int cargo;//载货量
  private String type;
  public void msg(int i){}
  public String[] getTypes() {
  String[] types = {"passenger", "truck", "cargo"};
  return types;
  }
  public String getType() {
  return type;
  }
  public void setType(String type) {
  this.type = type;
  }
  /**
  • 获取汽车名
  • @return string
    */
    public String getName(){
    return this.name;
    }
    /**
  • 设置汽车名
  • @param name
    */
    public void setName(String name){
    this.name = name;
    }
    /**
  • 获取价钱
  • @return
    */
    public int getPrice(){
    return this.price;
    }
    /**
  • 设置价钱
  • @param price
    */
    public void setPrice(int price){
    this.price = price;
    }
    /**
  • 获取载人量
  • @return
    */
    public int getPeopleTotal(){
    return this.peopleTotal;
    }
    /**
  • 设置载人量
  • @param peopleTotal
    */
    public void setPeopleTotal(int peopleTotal){
    this.peopleTotal = peopleTotal;
    }
    /**
  • 获取载货量
  • @return
    */
    public int getCargo(){
    return this.cargo;
    }
    /**
  • 设置载货量
  • @param cargo
    */
    public void setCargo(int cargo){
    this.cargo = cargo;
    }
    }

    /*

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  */
  package test;

/*
载人类

• @author Administrator
  */
  public class passengerCar extends Cars{
  /**
  • 构造
  • @param name
  • @param price
  • @param peopleTotal
    */
    public passengerCar(String name, int price, int peopleTotal) {
    this.setName(name);
    this.setPeopleTotal(peopleTotal);
    this.setPrice(price);
    this.setType("passenger");
    }
    /**
  • 打印信息
    */
    public void msg(int i) {
    String m = i+"\t"+this.getName()+"\t"+this.getPrice()+"元/天"+"\t\t"+"载人"+this.getPeopleTotal()+"个";
    System.out.println(m);
    }

}

/*

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  */
  package test;

/*
载货量

• @author Administrator
  */
  public class Truck extends Cars{
  public Truck(String name, int price, int cargo) {
  this.setName(name);
  this.setCargo(cargo);
  this.setPrice(price);
  this.setType("truck");
  }
  /**
  • 打印信息
    */
    public void msg(int i) {
    String m = i+"\t"+this.getName()+"\t"+this.getPrice()+"元/天"+"\t\t"+"载货"+this.getCargo()+"kg";
    System.out.println(m);
    }
    }

/*

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  */
  package test;

/*
载人，载货量

• @author Administrator
  */
  public class Cargo extends Cars{
  public Cargo(String name, int price, int peopleTotal, int cargo) {
  this.setName(name);
  this.setPeopleTotal(peopleTotal);
  this.setPrice(price);
  this.setCargo(cargo);
  this.setType("cargo");
  }
  /**
  • 打印信息
    */
    public void msg(int i) {
    String m = i+"\t"+this.getName()+"\t"+this.getPrice()+"元/天"+"\t\t"+"载人"+this.getPeopleTotal()+"个"+"\t"+"载货"+this.getCargo()+"kg";
    System.out.println(m);
    }
    }

/*

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• To change this template file, choose Tools Templates
• and open the template in the editor.
  */
  package test;
  import java.util.Scanner;
  /**
• @author Administrator
  /
  public class CarTest {
  public static void main(String[] args) {
  Scanner sc = new Scanner(System.in);
  Cars[] car = {
  new passengerCar("奥迪A6L", 500, 4),
  new passengerCar("马自达6", 400, 4),
  new Truck("松花江", 400, 4),
  new Truck("依维柯", 800, 20),
  new Cargo("皮卡雪6", 500, 4,2),
  new Cargo("TSL-6", 800, 3,3),
  };
  System.out.println("你是否要租车: 1是 0否");
  int p = sc.nextInt();
  if(p == 1) {
  System.out.println("你可租车的类型和租金");
  System.out.println("序号"+"\t"+"汽车名称"+"\t"+" 租金"+"\t\t"+"容量");
  for(int i = 0;i < car.length;i++){
  car[i].msg((i+1));
  }
  //选择车的数量
  System.out.println("请输入你要租车的数量:");
  int carCount = sc.nextInt();
  if(carCount <=0 ){
  System.out.println("数量不能小于0");
  }
  int[] carArray = new int[carCount];
  //记录选择的车
  for(int i = 0;i < carCount; i++) {
  System.out.println("请输入你要租用的车辆序号:");
  int carNum = sc.nextInt();
  carArray[i] = carNum;
  }
  System.out.println("请输入你要租的天数：");
  int day = sc.nextInt();
  //找出选择车的信息, 统计
  System.out.println("你的账单:");
  System.out.println("选择载车的有:");
  int r = 0;
  int h = 0;
  int sum = 0;
  for(int i=0;i<carArray.length;i++) {
  String type = car[carArray[i]-1].getType();
  if("passenger".equals(type) "cargo".equals(type)) {
  System.out.println(car[carArray[i]-1].getName());
  r += car[carArray[i]-1].getPeopleTotal();
  }
  sum += car[carArray[i]-1].getPrice()day;
  }
  System.out.println("总载客量："+r);
  System.out.println("选择载货的有:");
  for(int i=0;i<carArray.length;i++) {
  String type = car[carArray[i]-1].getType();
  if("truck".equals(type) "cargo".equals(type)) {
  System.out.println(car[carArray[i]-1].getName());
  h += car[carArray[i]-1].getCargo();
  }
  }
  System.out.println("总载货量："+h);
  System.out.println("租车总价格："+sum);
  }else{
  System.out.println("欢迎再次租车!");
  }
  }
  }