Java入门第二季第六章项目实战（租车系统）

新手，望指教。

package test;

public class CarInfo {

private int pNum;
private String type;
private String name;
private double weight;
private int rentment;

public int getpNum(){
    return pNum;
}
public void setpNum(int newPnum){
    pNum=newPnum;
}
public String getName(){
    return name;
}
public void setName(String newName){
    name=newName;
}
public String getType(){
    return type;
}
public void setType(String newType){
    type=newType;
}
public double getWeight(){
    return weight;
}
public void setWeight(double newWeight){
    weight=newWeight;
}
public int getRentment(){
    return rentment;
}
public void setRentment(int newRentment){
    rentment=newRentment;
}
 public String toString() { 
     return type+"     "+name+"     "+rentment+"元/天  "+weight+"吨"+pNum+"人";
}

}

package test;

public class HuoCar extends CarInfo implements IzaiHuo{

private double weight;
private String type;
private String name;
private int rentment;

public HuoCar(){};
public HuoCar(String newName,String newType,double newWeight,int newRentment){
    this.weight=newWeight;
    this.type=newType;
    this.name=newName;
    this.rentment=newRentment;
};
 @Override 
 public String toString() { 
     return type+"     "+name+"     "+rentment+"元/天  "+weight+"吨";
}

public double getWeight(){
    return weight;
}
public void setWeight(double newWeight){
    weight=newWeight;
}
public String getName(){
    return name;
}
public void setName(String newName){
    name=newName;
}
public String getType(){
    return type;
}
public void setType(String newType){
    type=newType;
}
public int getRentment(){
    return rentment;
}
public void setRentment(int newRentment){
    rentment=newRentment;
}

public void zaihuo() {
    System.out.println("可载货");              
}

}
package test;

public class KeCar extends CarInfo implements IzaiKe{

private int pNum;
private String type;
private String name;
private int rentment;

public KeCar(){};
public KeCar(String newName,String newType,int newPnum, int newRentment){
    this.pNum=newPnum;
    this.type=newType;
    this.name=newName;
    this.rentment=newRentment;
};
public int getpNum(){
    return pNum;
}
public void setpNum(int newPnum){
    pNum=newPnum;
}
public String getName(){
    return name;
}
public void setName(String newName){
    name=newName;
}
public String getType(){
    return type;
}
public void setType(String newType){
    type=newType;
}
public int getRentment(){
    return rentment;
}
public void setRentment(int newRentment){
    rentment=newRentment;
}
 @Override 
 public String toString() { 
     return type+"     "+name+"     "+rentment+"元/天  "+pNum+"人";
}
public void zaike() {
    System.out.println("可载人");  
}

}

package test;

public class KeHuoCar extends CarInfo implements IzaiHuo,IzaiKe{

private int pNum;
private String type;
private String name;
private double weight;
private int rentment;

public KeHuoCar(){};
public KeHuoCar(String newName,String newType,int newPnum,double newWeight,int newRentment){
    this.pNum=newPnum;
    this.type=newType;
    this.name=newName;
    this.weight=newWeight;
    this.rentment=newRentment;
};
public int getpNum(){
    return pNum;
}
public void setpNum(int newPnum){
    pNum=newPnum;
}
public String getName(){
    return name;
}
public void setName(String newName){
    name=newName;
}
public String getType(){
    return type;
}
public void setType(String newType){
    type=newType;
}
public double getWeight(){
    return weight;
}
public void setWeight(double newWeight){
    weight=newWeight;
}
public int getRentment(){
    return rentment;
}
public void setRentment(int newRentment){
    rentment=newRentment;
}

public void zaike() {
    System.out.println("可载人");  
}

public void zaihuo() {
    System.out.println("可载货");  
}
@Override 
 public String toString() { 
     return type+"     "+name+"     "+rentment+"元/天  "+weight+"吨"+pNum+"人";
}

}

package test;

public interface IzaiHuo {
public void zaihuo();
}

package test;

public interface IzaiKe {
public void zaike();
}

package test;
import java.util.Scanner;

public class Main {

public static void main(String[] args) {

    CarInfo car[]={new HuoCar("松花江","1",2,400),
            new HuoCar("依维柯","2",20,1000),
            new KeCar("奥迪A4","3",4,500),
            new KeCar("金龙","4",20,800),
            new KeHuoCar("皮卡","5",4,2,450)};

    Scanner flag=new Scanner(System.in);
    Scanner num=new Scanner(System.in);
    Scanner no=new Scanner(System.in);
    Scanner day=new Scanner(System.in);

    int num2,day2,sum=0,ton=0,person=0;//租车数量，时间，总价，总载货吨数，总载人数

    System.out.println("欢迎使用大大租车系统：");
    System.out.println("您是否要租车：1是 0否");     

    if(flag.nextInt()==1){
        System.out.println("您可以租车的类型及其价目表：");
        System.out.println("序号       汽车名称       租金        容量     ");        
        System.out.println(car[0].toString() );
        System.out.println(car[1].toString() );
        System.out.println(car[2].toString() );
        System.out.println(car[3].toString() );
        System.out.println(car[4].toString() );

        System.out.println("请输入你要租车的数量（不超过5）：");//可修改（超过5）
        num2=num.nextInt();
        CarInfo[] arrCur=new CarInfo[num2];
        for(int i=0;i<num2;i++){
            System.out.println("请输入你要租的车序号：");//可修改（输入序号重复）
            int j=no.nextInt();
            arrCur[i]=car[j-1];
        }
        System.out.println("请输入租车天数：");//可修改（不同序号车租不同时间）
        day2=day.nextInt();

        for(int i=0;i<num2;i++){                
            sum+=arrCur[i].getRentment()*day2; //租车费用
        }

        System.out.println("你的账单");
        System.out.println("***可载人的车有：");
        for(CarInfo c: arrCur  ){
            if(c instanceof KeCar || c instanceof KeHuoCar){
                System.out.print(c.getName()+"  ");
                person+=c.getpNum();
            }
        }
        System.out.println("可载人："+person+"人");

        System.out.println("***可载货的车有：");
        for(CarInfo c: arrCur  ){
            if(c instanceof HuoCar || c instanceof KeHuoCar){
                System.out.print(c.getName()+"  ");
                ton+=c.getWeight();
            }
        }
        System.out.println("可载货："+ton+"吨");

        System.out.println("***租车总价格："+sum+"元");

    }else System.out.println("程序结束");

}

}