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Key Sorting of hashmap in java

SOURCE : HasMapSort.java



import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

public class HasMapSort {

	public static void main(String[] args) {
		
		HashMap hmap = new HashMap<>();
		
		hmap.put("sandy",34);
		hmap.put("andy",94);
		hmap.put("Aandy",78);
		hmap.put("ndy",67);
		hmap.put("gahdhj",4);
		hmap.put("phdb",676);
		
	ArrayList> entries = new ArrayList<>(hmap.entrySet());
	
	Collections.sort(entries,new Comparator>() {

		@Override
		public int compare(Entry o1, Entry o2) {
			
			return o1.getKey().compareTo(o2.getKey());
		}
	});

	for(Map.Entry hm : entries){
			System.out.println(hm);
		
	}
	}
	
	}

INPUT


map = {Aandy=78, ndy=67, gahdhj=4, phdb=676, sandy=34, andy=94}

OUTPUT


Aandy=78
andy=94
gahdhj=4
ndy=67
phdb=676
sandy=34

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how to sort Key in hashmap in java