How to print and sort the EXACT way by using hash maps Pleas

Please enter the name of the input file, or q to suit, · albums.txt U2: 6 Beatles: 5 Madonna: 4 Bob Dylan: 4 Nirvana s 3 Radiohead: 3 Led Zeppelin: 3 Pink Floyd: 3 Rolling Stones: 3 Weezer: 3 Pearl Jam: 3 Bruce Springsteen: 3 Who: 3 Guns N\' Roses: 2 Michael Jackson: 2 Smashing Pumpkins: 2 Eminem: 2 Oasis: Red Hot Chili Peppers: 2 Metallica: 2 Jimi Hendrix: 2 Dave Matthews Band: 2 Clash t 1 Beach Boys: 1 R.E.M.: 1 Tool: 1 Green Day: 1 Jeff Buckley: 1 Fleetwood Mac: 1

Solution

Once a map is created from the file use below code:

Set<Entry<String, Integer>> set = hm.entrySet();
List<Entry<String, Integer>> list = new ArrayList<Entry<String, Integer>>(set);
Collections.sort(list, new Comparator<Map.Entry<String, Integer>>() {
public int compare(Map.Entry<String, Integer> m1,Map.Entry<String, Integer> m2) {
return m2.getValue().compareTo(m1.getValue());
}
});

for (Entry<String, Integer> entry : list) {
System.out.println(entry.getKey()+\" : \"+entry.getValue());
}