TreeMap使用和Comparable比较

package com.mengge.test;

import java.util.Map;
import java.util.TreeMap;;

public class TestTreeMap {
	
	public static void main(String[] args) {
//		Map<Integer, String> myMap = new TreeMap<Integer, String>();
		
//		Map<Integer, String> map = new java.util.TreeMap<>();
//				
//		map.put(1, "列宁");
//		map.put(3, "斯达克");
//		map.put(100, "时代大厦");
//		map.put(22, "阿斯达");
//		map.put(88, "uuuiw");
//		
//		for (Integer keyIndex : map.keySet()) {
//			System.out.println("key:" + keyIndex + ", value:" + map.get(keyIndex));
//		}

		
		MyEmployee mye1 = new MyEmployee(10, "张三", 1000);
		MyEmployee mye2 = new MyEmployee(90, "李四", 90000);
		MyEmployee mye3 = new MyEmployee(20, "王五", 3000);
		MyEmployee mye4 = new MyEmployee(30, "赵六", 3000);
		MyEmployee mye5 = new MyEmployee(900, "王五", 9000);
		MyEmployee mye6 = new MyEmployee(80, "王七", 7000);
		MyEmployee mye7 = new MyEmployee(22, "王八", 90000);
		MyEmployee mye8 = new MyEmployee(9, "王九", 1000);

		Map<MyEmployee, Integer> objectMap = new TreeMap<MyEmployee, Integer>();
		objectMap.put(mye1, mye1.getNid());
		objectMap.put(mye2, mye2.getNid());
		objectMap.put(mye3, mye3.getNid());
		objectMap.put(mye4, mye4.getNid());
		objectMap.put(mye5, mye5.getNid());
		objectMap.put(mye6, mye6.getNid());
		objectMap.put(mye7, mye7.getNid());
		objectMap.put(mye8, mye8.getNid());
		
		
		for (MyEmployee emp : objectMap.keySet()) {
			System.out.println("姓名:" + emp.getName() + ", 薪资:" + emp.getSalary() + ", id:" + emp.getNid());
		}
		
		
		
	}

}


class MyEmployee implements Comparable<MyEmployee> {
	private int nid;
	private String name;
	private double salary;
	public MyEmployee(int nid, String name, double salary) {
		super();
		this.nid = nid;
		this.name = name;
		this.salary = salary;
	}
	public int getNid() {
		return nid;
	}
	public void setNid(int nid) {
		this.nid = nid;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public double getSalary() {
		return salary;
	}
	public void setSalary(double salary) {
		this.salary = salary;
	}
	
	@Override
	public int compareTo(MyEmployee o) {
		
		if (this.salary < o.salary) {
			return -1;
		}else if (this.salary > o.salary) {
			return 1;
		}else {
			 if (this.nid < o.nid) {
					return -1;
				}else if (this.nid > o.nid) {
					return 1;
				}else {
					return 0;
				}
		}
	}
	
	
}