Sort a HashMap using Key which is String

 import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.TreeMap;

public class Student {

//code for generating HashMap; sort using the String name

public static void main(String[] args) {

// TODO Auto-generated method stub

Map<String, Integer> map = new HashMap<String, Integer>();

Map<String, Integer> sorted = new TreeMap<>();

                map.put("chitra", 30);

map.put("hari", 20);

map.put("abhi", 50);

System.out.println(map.size());

sorted.putAll(map);

for(Map.Entry<String, Integer> entry: sorted.entrySet()) {

System.out.println(entry.getKey() + " -->" + entry.getValue());

}

   }

}