编写一个模拟股票的Stock类（教材P.84的编程作业3-1）

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已于 2022-10-12 21:23:00 修改

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文章标签： java

于 2022-09-29 11:05:45 首次发布

本文链接：https://blog.youkuaiyun.com/Shiny_desiger/article/details/127103324

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这是一个Java程序，定义了一个`Stock`类，包含了股票的符号、名称、前收盘价和当前价格属性。类中提供了相应的getter和setter方法。在`StockTest`类中，创建了`Stock`对象并设置了属性，然后计算了价格浮动百分比，并覆盖了`toString`方法进行输出。程序使用了`Random`类生成随机价格。

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import java.util.Random;

/**
 * @author: 袁
 * @date: 2022-09-22 14:53
 * @desc:
 */
class Stock {
    private String symbol;
    private String name;
    private double previousClosingPrice;
    private double currentPrice;

    public Stock() {
    }

    public Stock(String symbol, String name, double previousClosingPrice, double currentPrice) {
        this.symbol = symbol;
        this.name = name;
        this.previousClosingPrice = previousClosingPrice;
        this.currentPrice = currentPrice;
    }

    public String getSymbol() {
        return symbol;
    }

    public void setSymbol(String symbol) {
        this.symbol = symbol;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getPreviousClosingPrice() {
        return previousClosingPrice;
    }

    public void setPreviousClosingPrice(double previousClosingPrice) {
        this.previousClosingPrice = previousClosingPrice;
    }

    public double getCurrentPrice() {
        return currentPrice;
    }

    public void setCurrentPrice(double currentPrice) {
        this.currentPrice = currentPrice;
    }

    // 函数覆盖：同类同名同参
    public String toString(){
        String s = "该函数被覆盖";
        System.out.println(s);
        return s;
    }

}
public class StockTest {
    public static void main(String[] args) {
        Stock stock = new Stock();
        stock.setSymbol("SUNW");
        stock.setName("Sun");
        stock.setPreviousClosingPrice(50);
        Random r = new Random();
        double random = r.nextInt();
        stock.setCurrentPrice(random);
        System.out.println("价格浮动:"+(stock.getCurrentPrice()-stock.getPreviousClosingPrice())/ stock.getPreviousClosingPrice()+ "%");
        stock.toString();
    }
}