创建一个Map对象要求员工类：编号 姓名 工资 用来存储员工数据 key是员工编号 value是员工对象map要用泛型 map添加3对值 用keyset和Entryset输出

以下是Java代码实现：

import java.util.*;

public class Employee {
    private int id;
    private String name;
    private double salary;

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

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public double getSalary() {
        return salary;
    }

    @Override
    public String toString() {
        return "Employee{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", salary=" + salary +
                '}';
    }

    public static void main(String[] args) {
        Map<Integer, Employee> employeeMap = new HashMap<>();
        employeeMap.put(1001, new Employee(1001, "Alice", 5000));
        employeeMap.put(1002, new Employee(1002, "Bob", 6000));
        employeeMap.put(1003, new Employee(1003, "Charlie", 7000));

        // 使用 keySet() 方法遍历 Map
        System.out.println("使用 keySet() 方法遍历 Map:");
        Set<Integer> keySet = employeeMap.keySet();
        for (int id : keySet) {
            System.out.println(employeeMap.get(id));
        }

        // 使用 entrySet() 方法遍历 Map
        System.out.println("使用 entrySet() 方法遍历 Map:");
        Set<Map.Entry<Integer, Employee>> entrySet = employeeMap.entrySet();
        for (Map.Entry<Integer, Employee> entry : entrySet) {
            System.out.println(entry.getValue());
        }
    }
}

输出结果为：

使用 keySet() 方法遍历 Map:
Employee{id=1001, name='Alice', salary=5000.0}
Employee{id=1002, name='Bob', salary=6000.0}
Employee{id=1003, name='Charlie', salary=7000.0}
使用 entrySet() 方法遍历 Map:
Employee{id=1001, name='Alice', salary=5000.0}
Employee{id=1002, name='Bob', salary=6000.0}
Employee{id=1003, name='Charlie', salary=7000.0}