Java1、完成一个企业员工管理系统(EmployeeManagementSystem)， 员工信息(工号，姓名，性别，职位，月薪)功能点: 1. 员工入职(添加) 2. 调整员工的月薪 3. 查询所有员工 4. 根据员工的工号显示员工信息 5. 删除指定工号的员工 6. 统计一个月发放的总工资

你好！对于你的问题，我可以为你提供一个基本的 Java 代码示例，来实现企业员工管理系统。请注意，以下示例仅供参考，你可以根据自己的需求进行修改和扩展。

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

class Employee {
    private int id;
    private String name;
    private String gender;
    private String position;
    private double salary;

    public Employee(int id, String name, String gender, String position, double salary) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.position = position;
        this.salary = salary;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getGender() {
        return gender;
    }

    public String getPosition() {
        return position;
    }

    public double getSalary() {
        return salary;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }
}

class EmployeeManagementSystem {
    private List<Employee> employees;

    public EmployeeManagementSystem() {
        employees = new ArrayList<>();
    }

    public void addEmployee(Employee employee) {
        employees.add(employee);
        System.out.println("员工入职成功！");
    }

    public void adjustSalary(int id, double newSalary) {
        for (Employee employee : employees) {
            if (employee.getId() == id) {
                employee.setSalary(newSalary);
                System.out.println("员工月薪调整成功！");
                return;
            }
        }
        System.out.println("找不到指定工号的员工！");
    }

    public void displayAllEmployees() {
        if (employees.isEmpty()) {
            System.out.println("暂无员工信息！");
        } else {
            System.out.println("所有员工信息：");
            for (Employee employee : employees) {
                System.out.println("工号：" + employee.getId());
                System.out.println("姓名：" + employee.getName());
                System.out.println("性别：" + employee.getGender());
                System.out.println("职位：" + employee.getPosition());
                System.out.println("月薪：" + employee.getSalary());
                System.out.println("--------------------");
            }
        }
    }

    public void displayEmployeeById(int id) {
        for (Employee employee : employees) {
            if (employee.getId() == id) {
                System.out.println("工号：" + employee.getId());
                System.out.println("姓名：" + employee.getName());
                System.out.println("性别：" + employee.getGender());
                System.out.println("职位：" + employee.getPosition());
                System.out.println("月薪：" + employee.getSalary());
                return;
            }
        }
        System.out.println("找不到指定工号的员工！");
    }

    public void deleteEmployeeById(int id) {
        for (Employee employee : employees) {
            if (employee.getId() == id) {
                employees.remove(employee);
                System.out.println("员工删除成功！");
                return;
            }
        }
        System.out.println("找不到指定工号的员工！");
    }

    public double calculateTotalSalary() {
        double totalSalary = 0;
        for (Employee employee : employees) {
            totalSalary += employee.getSalary();
        }
        return totalSalary;
    }
}

public class Main {
    public static void main(String[] args) {
        EmployeeManagementSystem system = new EmployeeManagementSystem();
        Scanner scanner = new Scanner(System.in);

        while (true) {
            System.out.println("请选择操作：");
            System.out.println("1. 员工入职");
            System.out.println("2. 调整员工的月薪");
            System.out.println("3. 查询所有员工");
            System.out.println("4. 根据员工的工号显示员工信息");
            System.out.println("5. 删除指定工号的员工");
            System.out.println("6. 统计一个月发放的总工资");
            System.out.println("0. 退出程序");

            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    System.out.println("请输入员工信息：");
                    System.out.print("工号：");
                    int id = scanner.nextInt();
                    scanner.nextLine(); // 消耗换行符
                    System.out.print("姓名：");
                    String name = scanner.nextLine();
                    System.out.print("性别：");
                    String gender = scanner.nextLine();
                    System.out.print("职位：");
                    String position = scanner.nextLine();
                    System.out.print("月薪：");
                    double salary = scanner.nextDouble();
                    Employee employee = new Employee(id, name, gender, position, salary);
                    system.addEmployee(employee);
                    break;
                case 2:
                    System.out.print("请输入要调整月薪的员工工号：");
                    int adjustId = scanner.nextInt();
                    System.out.print("请输入新的月薪：");
                    double newSalary = scanner.nextDouble();
                    system.adjustSalary(adjustId, newSalary);
                    break;
                case 3:
                    system.displayAllEmployees();
                    break;
                case 4:
                    System.out.print("请输入要查询的员工工号：");
                    int displayId = scanner.nextInt();
                    system.displayEmployeeById(displayId);
                    break;
                case 5:
                    System.out.print("请输入要删除的员工工号：");
                    int deleteId = scanner.nextInt();
                    system.deleteEmployeeById(deleteId);
                    break;
                case 6:
                    double totalSalary = system.calculateTotalSalary();
                    System.out.println("一个月发放的总工资：" + totalSalary);
                    break;
                case 0:
                    System.out.println("程序已退出。");
                    return;
                default:
                    System.out.println("无效的选择！");
                    break;
            }
        }
    }
}

这是一个简单的员工管理系统，你可以根据自己的需求进行修改和扩展。希望对你有帮助！如果还有其他问题，请随时提问。