title: How can I sort the name of student on the basis of their marks?
body: <p>How can I sort the name of student on basis of their marks? The marks of student is provided. Can I use <code>Collection</code> class in java for the sorting? Should I <code>import</code> something?</p>
  
  <pre><code>import java.util.*;
  
  class ShortRecord {
  
     public static void main(String args[]) {
  
        // Create a hash map
        HashMap hm = new HashMap();
        // Put elements to the map
        hm.put("Zara", new Double(3434.34));
        hm.put("Mahnaz", new Double(123.22));
        hm.put("Ayan", new Double(1378.00));
        hm.put("Daisy", new Double(99.22));
        hm.put("Qadir", new Double(-19.08));
  
        // Get a set of the entries
        Set set = hm.entrySet();
        // Get an iterator
        Iterator i = set.iterator();
        // Display elements
        while (i.hasNext()) {
           System.out.print(me.getKey() + ": ");
           System.out.println(me.getValue());
        }
  
     }
  }
  </code></pre>