Funktionen zur Analyse der Lagerumschlagsrate und zur Kontrolle des Lageralters des Java-Lagerverwaltungssystems

import java.util.Date;

public class InventoryTurnover {
    private int beginningInventory;
    private int endingInventory;
    private int costOfGoodsSold;

    public InventoryTurnover(int beginningInventory, int endingInventory, int costOfGoodsSold) {
        this.beginningInventory = beginningInventory;
        this.endingInventory = endingInventory;
        this.costOfGoodsSold = costOfGoodsSold;
    }

    public double calculateInventoryTurnoverRate() {
        double averageInventory = (beginningInventory + endingInventory) / 2.0;
        return costOfGoodsSold / averageInventory;
    }

    public static void main(String[] args) {
        int beginningInventory = 1000;
        int endingInventory = 1200;
        int costOfGoodsSold = 5000;

        InventoryTurnover inventoryTurnover = new InventoryTurnover(beginningInventory, endingInventory, costOfGoodsSold);
        double turnoverRate = inventoryTurnover.calculateInventoryTurnoverRate();
        System.out.println("库存周转率为：" + turnoverRate);
    }
}

import java.util.Date;

public class InventoryAgeControl {
    private Date manufacturingDate;
    private int maximumAge;

    public InventoryAgeControl(Date manufacturingDate, int maximumAge) {
        this.manufacturingDate = manufacturingDate;
        this.maximumAge = maximumAge;
    }

    public boolean isExpired() {
        Date currentDate = new Date();
        long daysBetween = (currentDate.getTime() - manufacturingDate.getTime()) / (1000 * 3600 * 24);
        return daysBetween > maximumAge;
    }

    public static void main(String[] args) {
        Date manufacturingDate = new Date();
        int maximumAge = 365;

        InventoryAgeControl inventoryAgeControl = new InventoryAgeControl(manufacturingDate, maximumAge);
        boolean isExpired = inventoryAgeControl.isExpired();
        System.out.println("商品是否过期：" + isExpired);
    }
}