java - 如何重置构造函数的 getter 和 setter

Question

在我最近的大学工作中，我收到了一项任务，我认为该任务是重新分配由 getter 和 setter 设置的值。确切的问题是 "编辑所有类别共享的产品主要信息，如ID、 描述等”

我对这个问题的尝试如下。

 public void editProductInformation() { //Standard level task 2 method 3

        this.ID = 456890;
        this.description = "Eggs";
        this.recommendedUnitPrice = 10;
        this.Unit = 6;
        this.weight = 750;              
    }

}

这也是该类其余部分的代码

public class Product {

    Scanner input = new Scanner(System.in);

    protected int ID;
    protected String description;
    protected double recommendedUnitPrice;
    protected double actualPrice;
    protected int Unit = 1;
    protected double weight;
    protected LocalDate expiaryDate;
    protected LocalDate expireDate;

    public Product(int ID, String description, double recommendedUnitPrice, int unit, double weight, LocalDate expiarayDate) {
        this.ID = ID;
        this.description = description;
        this.recommendedUnitPrice = recommendedUnitPrice;
        this.Unit = unit;
        this.weight = weight;
        this.expiaryDate = expiarayDate;

    }

    public int getID() {
        return this.ID;
    }

    public void setID(int ID) {
        this.ID = ID;
    }

    public String getDescription() {
        return this.description;
    }

    public void setDescripption(String description) {
        this.description = description;
    }

    public double getRecommendedUnitPrice() {
        return this.recommendedUnitPrice;
    }

    public void setRecommendedUnitPrice(double recommendedUnitPrice) {
        this.recommendedUnitPrice = recommendedUnitPrice;
    }

    public int getUnit() {
        return this.Unit;
    }

    public void setUnit(int unit) {
        this.Unit = unit;
    }

    public double getWeight() {
        return this.weight;
    }

    public void setWeight(double Weight) {
        this.weight = Weight;
    }

    public LocalDate getExpiaryDate() {
        return expiaryDate;
    }

    public void setExpiaryDate(LocalDate expiaryDate) {
        this.expiaryDate = expiaryDate;
    }

    public void setPrice() {
        System.out.println("Enter the price: ");
        this.actualPrice = input.nextDouble();
    }

    public void setExpireDate() {

        System.out.println("Enter the given date: ");
        int day = input.nextInt();
        int month = input.nextInt();
        int year = input.nextInt();
        LocalDate date = LocalDate.of(day, month, year);
        this.expireDate = date;
    }

    public void comparePrice() { // Standard level task 2 method 1

        if (recommendedUnitPrice == actualPrice) {
            System.out.println("Price is equal");
        } else if (recommendedUnitPrice < actualPrice) {
            System.out.println("Price is less");
        } else if (recommendedUnitPrice > actualPrice) {
            System.out.println("Price is more");
        }

    }

    public void verifyExpireProduct() { //Standard level task 2 method 2

        if(expireDate == expiaryDate) {
            System.out.println("Product is expired");
        }
        else System.out.println("Product is not expired");
    }

我知道这个问题可能解释得不够好，所以我知道人们是否希望投反对票。非常感谢任何见解或帮助!

Answer 1

您可以创建此类的对象，然后使用类中定义的 setter 函数来设置值。

Product p1 = new Product();
p1.setId(5);
//This will set the Id to 5