Java를 사용하여 창고 관리 시스템의 포장 및 포장재 관리 기능 개발

class Package {
    private String name;
    private String specification;
    private int stockQuantity;

    public Package(String name, String specification, int stockQuantity) {
        this.name = name;
        this.specification = specification;
        this.stockQuantity = stockQuantity;
    }

    // 省略getter和setter方法
}

class PackagingMaterial {
    private String name;
    private String specification;
    private int stockQuantity;

    public PackagingMaterial(String name, String specification, int stockQuantity) {
        this.name = name;
        this.specification = specification;
        this.stockQuantity = stockQuantity;
    }

    // 省略getter和setter方法
}

import java.util.ArrayList;
import java.util.List;

class PackageManagement {
    private List<Package> packages;

    public PackageManagement() {
        packages = new ArrayList<>();
    }

    public void addPackage(Package p) {
        packages.add(p);
    }

    public void deletePackage(Package p) {
        packages.remove(p);
    }

    public Package getPackageByName(String name) {
        for (Package p : packages) {
            if (p.getName().equals(name)) {
                return p;
            }
        }
        return null;
    }

    public void updateStockQuantity(Package p, int quantity) {
        p.setStockQuantity(quantity);
    }
}

class PackagingMaterialManagement {
    private List<PackagingMaterial> materials;

    public PackagingMaterialManagement() {
        materials = new ArrayList<>();
    }

    public void addPackagingMaterial(PackagingMaterial m) {
        materials.add(m);
    }

    public void deletePackagingMaterial(PackagingMaterial m) {
        materials.remove(m);
    }

    public PackagingMaterial getMaterialByName(String name) {
        for (PackagingMaterial m : materials) {
            if (m.getName().equals(name)) {
                return m;
            }
        }
        return null;
    }

    public void updateStockQuantity(PackagingMaterial m, int quantity) {
        m.setStockQuantity(quantity);
    }
}