Map to sort

package com.jt.test;

import java.util.*;

/**
 * @Author: ldj
 * @Date: 2022/02/16/11:39
 * @Description:  Yes map Sort 
 */
public class SplicingXml {

    public static void main(String[] args) {

        Map<String, String> dateMap = new HashMap<>();
        dateMap.put("1 God ", "day1");
        dateMap.put("5 God ", "day5");
        dateMap.put("4 God ", "day4");
        dateMap.put("2 God ", "day2");
        dateMap.put("3 God ", "day3");

        //------------------ Yes key Key values are sorted in ascending dictionary order ---------------------
        Set<String> keySet = dateMap.keySet();
        List<String> list = new ArrayList<>(keySet);
        Collections.sort(list);

        for (int i = 0; i < list.size(); i++) {
            System.out.println(list.get(i) + " => " + dateMap.get(list.get(i)));
        }

        //------------------ Traverse in insertion order （" Orderly map"）---------------------------
        Map<String, String> linkedHashMap = new LinkedHashMap();
        linkedHashMap.put("A", "a");
        linkedHashMap.put("B", "b");
        linkedHashMap.put("D", "d");
        linkedHashMap.put("F", "f");
        linkedHashMap.put("C", "c");

        // Use foreach Traverse  ( Most succinct , Low performance requirements , recommend )
        linkedHashMap.forEach((k, v) -> System.out.println(k + ":" + v));

        // Use iterators to traverse 1  ( Efficient )
        Iterator<Map.Entry<String, String>> entries = linkedHashMap.entrySet().iterator();

        while (entries.hasNext()) {
            Map.Entry<String, String> entry = entries.next();
            String key = entry.getKey();
            String value = entry.getValue();
            System.out.println(key + ":" + value);
        }

        // Use iterators to traverse 2 ( Low efficiency )
        Iterator<String> iterator = linkedHashMap.keySet().iterator();

        while (iterator.hasNext()) {
            String key = iterator.next();
            String value = linkedHashMap.get(key);
            System.out.println(key + ":" + value);
        }
    }
}