java员工管理系统工厂模式代码

Java员工管理系统可以使用工厂模式进行设计和实现。工厂模式是一种创建型设计模式，它提供了一种创建对象的最佳方式，通过使用工厂方法来解决对象创建的问题。以下是Java员工管理系统的工厂模式代码：

1. 定义一个抽象类Employee

public abstract class Employee {
    protected String name;
    protected int age;

    public Employee(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public abstract void work();
}

2. 定义两个具体的员工类Manager和Developer，继承自Employee

public class Manager extends Employee {
    public Manager(String name, int age) {
        super(name, age);
    }

    @Override
    public void work() {
        System.out.println("Manager is managing employees.");
    }
}

public class Developer extends Employee {
    public Developer(String name, int age) {
        super(name, age);
    }

    @Override
    public void work() {
        System.out.println("Developer is developing software.");
    }
}

3. 定义一个EmployeeFactory类，根据传入的参数来创建对应的员工对象

public class EmployeeFactory {
    public static final String MANAGER = "manager";
    public static final String DEVELOPER = "developer";

    public static Employee createEmployee(String type, String name, int age) {
        if (type.equals(MANAGER)) {
            return new Manager(name, age);
        } else if (type.equals(DEVELOPER)) {
            return new Developer(name, age);
        } else {
            throw new IllegalArgumentException("Invalid employee type.");
        }
    }
}

4. 在使用时，可以通过EmployeeFactory来创建对应类型的员工对象

public static void main(String[] args) {
    Employee manager = EmployeeFactory.createEmployee(EmployeeFactory.MANAGER, "Tom", 35);
    manager.work();

    Employee developer = EmployeeFactory.createEmployee(EmployeeFactory.DEVELOPER, "Jerry", 25);
    developer.work();
}