帮我写一个简单的人事管理信息系统的java代码，能运行的

好的，这是一个简单的人事管理信息系统的Java代码，它包括员工信息的添加、修改、删除和查询功能。请注意，这只是一个示例代码，可能需要根据具体需求进行修改。

import java.util.ArrayList;
import java.util.Scanner;

class Employee {
    private String name;
    private int age;
    private String gender;
    private String department;

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

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getDepartment() {
        return department;
    }

    public void setDepartment(String department) {
        this.department = department;
    }

    @Override
    public String toString() {
        return "Name: " + name + ", Age: " + age + ", Gender: " + gender + ", Department: " + department;
    }
}

class EmployeeManagementSystem {
    private ArrayList<Employee> employees = new ArrayList<>();

    public void addEmployee() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter employee name: ");
        String name = scanner.next();
        System.out.print("Enter employee age: ");
        int age = scanner.nextInt();
        System.out.print("Enter employee gender: ");
        String gender = scanner.next();
        System.out.print("Enter employee department: ");
        String department = scanner.next();
        Employee employee = new Employee(name, age, gender, department);
        employees.add(employee);
        System.out.println("Employee added successfully.");
    }

    public void updateEmployee() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter employee name to update: ");
        String name = scanner.next();
        boolean found = false;
        for (Employee employee : employees) {
            if (employee.getName().equals(name)) {
                System.out.print("Enter new employee age: ");
                int age = scanner.nextInt();
                System.out.print("Enter new employee gender: ");
                String gender = scanner.next();
                System.out.print("Enter new employee department: ");
                String department = scanner.next();
                employee.setAge(age);
                employee.setGender(gender);
                employee.setDepartment(department);
                System.out.println("Employee updated successfully.");
                found = true;
                break;
            }
        }
        if (!found) {
            System.out.println("Employee not found.");
        }
    }

    public void deleteEmployee() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter employee name to delete: ");
        String name = scanner.next();
        boolean found = false;
        for (Employee employee : employees) {
            if (employee.getName().equals(name)) {
                employees.remove(employee);
                System.out.println("Employee deleted successfully.");
                found = true;
                break;
            }
        }
        if (!found) {
            System.out.println("Employee not found.");
        }
    }

    public void searchEmployee() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter employee name to search: ");
        String name = scanner.next();
        boolean found = false;
        for (Employee employee : employees) {
            if (employee.getName().equals(name)) {
                System.out.println(employee);
                found = true;
                break;
            }
        }
        if (!found) {
            System.out.println("Employee not found.");
        }
    }

    public void listEmployees() {
        for (Employee employee : employees) {
            System.out.println(employee);
        }
    }
}

public class Main {
    public static void main(String[] args) {
        EmployeeManagementSystem ems = new EmployeeManagementSystem();
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println();
            System.out.println("1. Add employee");
            System.out.println("2. Update employee");
            System.out.println("3. Delete employee");
            System.out.println("4. Search employee");
            System.out.println("5. List employees");
            System.out.println("0. Exit");
            System.out.print("Enter your choice: ");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    ems.addEmployee();
                    break;
                case 2:
                    ems.updateEmployee();
                    break;
                case 3:
                    ems.deleteEmployee();
                    break;
                case 4:
                    ems.searchEmployee();
                    break;
                case 5:
                    ems.listEmployees();
                    break;
                case 0:
                    System.exit(0);
                default:
                    System.out.println("Invalid choice.");
            }
        }
    }
}

这个程序包括一个 `Employee` 类来表示员工信息，以及一个 `EmployeeManagementSystem` 类来管理所有员工信息。在 `main` 函数中，我们创建了一个 `EmployeeManagementSystem` 对象，并提供了添加、修改、删除、查找和列出员工信息的选项。