Java多态练习2

news2024/11/20 2:25:01

设计金融产品类Financial，属性包括产品名称、产品介绍、起投金额、产品期限（int）、年化收益（百分数）；方法包括发布、截止、投资。

设计金融产品类子类：

基金产品Fund，继承金融产品类，属性包括投资地区、投资人、投资金额
股票产品Shares，继承金融产品类，属性包括股票价值、购买价格、购买笔数

要求：

1、所有父子类均完成get和set封装，以及构造方法（无参构造方法和有参构造方法）封装。

2、子类继承父类时，重写父类发布、截止、投资方法，方法体为输出发布、截止时间。

3、输入购买产品，判断实例化哪个子类对象，初始化父子类属性

4、投资，投资基金产品时，判断投资金额是否超过起投金额，如果未超过，提示投资失败，如果超过，输出基金产品完整信息并计算年化收益。（年化收益=投资金额期限年化收益）

5、投资，投资股票产品时，判断投资金额是否超过起投金额，如果未超过，提示投资失败，如果超过，输出股票产品完整信息并计算年化收益。年化收益=投资金额笔数期限*年化收益）

package com.jsu.java;

public class Financial {
    private String fname="中欧混合";//产品名称、
    private String fintroduce="光伏";//产品介绍、
    private double flauchMoney=6000.01;//起投金额、
    private int fdeadline=5;//产品期限（int）、
    private double fannualized=0.01;//年化收益（百分数）

    public void print(){
        System.out.println("产品名称为："+this.getFname()
                +"\n"+"产品介绍："+this.getFintroduce()
                +"\n"+"起投金额："+this.getFlauchMoney()
                +"\n"+"产品期限（int）："+this.getFdeadline()
                +"\n"+"年化收益（百分数）："+this.getFannualized());
    }

    public Financial() {
    }

    public Financial(String fname, String fintroduce, double flauchMoney, int fdeadline, double fannualized) {
        this.fname = fname;
        this.fintroduce = fintroduce;
        this.flauchMoney = flauchMoney;
        this.fdeadline = fdeadline;
        this.fannualized = fannualized;
    }

    public String getFname() {
        return fname;
    }

    public void setFname(String fname) {
        this.fname = fname;
    }

    public String getFintroduce() {
        return fintroduce;
    }

    public void setFintroduce(String fintroduce) {
        this.fintroduce = fintroduce;
    }

    public double getFlauchMoney() {
        return flauchMoney;
    }

    public void setFlauchMoney(double flauchMoney) {
        this.flauchMoney = flauchMoney;
    }

    public int getFdeadline() {
        return fdeadline;
    }

    public void setFdeadline(int fdeadline) {
        this.fdeadline = fdeadline;
    }

    public double getFannualized() {
        return fannualized;
    }

    public void setFannualized(double fannualized) {
        this.fannualized = fannualized;
    }
    public void issue(){

    }
    public void abort(){

    }
    public void invest(){

    }
}

package com.jsu.java;

import java.util.Scanner;

public class Fund extends Financial{
    private String area;//投资地区
    private String investor;//投资人
    private double inMoney;//投资金额

    public Fund() {
        super();
    }

    public Fund(String area, String investor, double inMoney) {
        super();
        this.area = area;
        this.investor = investor;
        this.inMoney = inMoney;
    }

    public String getArea() {
        return area;
    }

    public void setArea(String area) {
        this.area = area;
    }

    public String getInvestor() {
        return investor;
    }

    public void setInvestor(String investor) {
        this.investor = investor;
    }

    public double getInMoney() {
        return inMoney;
    }

    public void setInMoney(double inMoney) {
        this.inMoney = inMoney;
    }

    public Scanner getScanner() {
        return scanner;
    }

    public void setScanner(Scanner scanner) {
        this.scanner = scanner;
    }


    Scanner scanner = new Scanner(System.in);
    @Override
    public void issue() {
        System.out.println("发布时间为：2021年9月30日 8:00");
    }

    @Override
    public void abort() {
        System.out.println("截止时间为：2200年9月30日 18:00");
    }

    @Override
    public void invest() {
        System.out.println("投资");
        System.out.println("请输入投资金额：");
        this.inMoney = scanner.nextDouble();
        if(this.inMoney < super.getFlauchMoney()){
            System.out.println("起投金额未超过，投资失败");
        }else{
            this.print();
        }
    }
    @Override
    public void print(){
//		this.invest();
        System.out.println("产品名称为："+super.getFname()
                +"\n"+"产品介绍："+super.getFintroduce()
                +"\n"+"起投金额："+super.getFlauchMoney()
                +"\n"+"产品期限（int）："+super.getFdeadline()
                +"\n"+"年化收益（百分数）："+super.getFannualized());
        System.out.println("投资地区："+this.getArea()
                +"\n"+"投资人："+this.getInvestor()
                +"\n"+"投资金额"+this.getInMoney());
        System.out.println("年化收益为："+
                (this.getInMoney()*super.getFdeadline()*this.getFannualized()));
    }

}

package com.jsu.java;

import java.util.Scanner;

public class Shares extends Financial{
    private double value;//股票价值
    private double price;//购买价格
    private int num;//购买笔数

    public Shares() {
    }

    public Shares(double value, double price, int num) {
        this.value = value;
        this.price = price;
        this.num = num;
    }

    public double getValue() {
        return value;
    }

    public void setValue(double value) {
        this.value = value;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public int getNum() {
        return num;
    }

    public void setNum(int num) {
        this.num = num;
    }

    Scanner scanner = new Scanner(System.in);
    @Override
    public void issue() {
        System.out.println("发布时间为：2021年9月30日 9:00");
    }

    @Override
    public void abort() {
        System.out.println("截止时间为：2021年9月30日 19:00");
    }


    @Override
    public void invest() {
        System.out.println("投资");
        System.out.println("请输入投资金额：");
        this.price = scanner.nextDouble();
        if(this.price<super.getFlauchMoney()){
            System.out.println("投资失败！");
        }
        if(this.price < super.getFlauchMoney()){
            System.out.println("起投金额未超过，投资失败");
        }else{
            this.print();
        }
    }
    @Override
    public void print(){
        System.out.println("产品名称为："+super.getFname()
                +"\n"+"产品介绍："+super.getFintroduce()
                +"\n"+"起投金额："+super.getFlauchMoney()
                +"\n"+"产品期限（int）："+super.getFdeadline()
                +"\n"+"年化收益（百分数）："+super.getFannualized());
        System.out.println("股票价值："+this.getValue()
                +"\n"+"购买价格："+this.getPrice()
                +"\n"+"购买笔数"+this.getNum());
        System.out.println("年化收益为："+
                (this.getPrice()*this.getNum()*super.getFdeadline()*this.getFannualized()));
    }

}

package com.jsu;

import com.jsu.java.Financial;
import com.jsu.java.Fund;
import com.jsu.java.Shares;

import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Financial financial = new Financial("中欧混合","光伏",6000.0,5,0.01);
        String witch = null;
        financial.print();
        while(true){
            System.out.println("输入你要购买产品:");
            witch = scanner.next();
            financial = choice(witch);
            financial.invest();
            financial.issue();
            financial.abort();
        }
    }

    private static Financial choice(String witch) {
        Financial financial = null;
        if("基金产品".equals(witch)){
            financial = new Fund("山东","张三",9000.0);
        }
        else if("股票产品".equals(witch)){
            financial = new Shares(1000.0,5000.0,10);
        }
        else {
            System.out.println("输入错误,没有该产品");
            financial = new Financial();
        }
        return financial;
    }
}