创建一个TreeSet对象，并在其中添加一些员工对象（Employee），其姓名和工资分别是：张三8000，李四6000，王五5600，马六7500.最后按照工资的大小，降序输出（提示：让Employ

创建一个TreeSet对象，并在其中添加一些员工对象（Employee），其姓名和工资分别是：张三8000，李四6000，王五5600，马六7500.最后按照工资的大小，降序输出（提示：让Employee对象实现Comparable接口）

package ch007;

import java.util.TreeSet;

public class Employee implements Comparable<Employee>{
    private String name;
    private int salary;

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

    public String getName() {
        return name;
    }

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

    public int getSalary() {
        return salary;
    }

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

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

    public static void main(String[] args) {
        TreeSet<Employee> treeSet=new TreeSet<>();
        Employee employee1=new Employee("张三",8000);
        Employee employee2=new Employee("李四",6000);
        Employee employee3=new Employee("王五",5600);
        Employee employee4=new Employee("马六",7500);
        treeSet.add(employee1);
        treeSet.add(employee2);
        treeSet.add(employee3);
        treeSet.add(employee4);
        for(Employee employee:treeSet){
            System.out.println(employee.toString());
        }
    }

    @Override
    public int compareTo(Employee o) {
        return o.salary-this.salary;
    }
}

本文地址：https://blog.csdn.net/Happy_change/article/details/111915533