title: How to get all values of a specific key in a hash map of int[]
body: <p>I have a following haspmap</p>
  
  <pre><code>private static Map&lt;Integer, int[]&gt; hm = new HashMap&lt;Integer, int[]&gt;();
  m.put(1, new int[]{1,2,3,4,5});
  hm.put(96, new int[]{23,24,2,34,22});
  hm.put(101, new int[]{123,11,22,34,5,4,7});
  hm.put(96, new int[]{88,87,85,80,9,7,2,1});
  hm.put(96, new int[]{110,123,11,22,34,33,29,4});
  </code></pre>
  
  <p>I want to get all value for say key 96,</p>
  
  <pre><code>if (hm.containsKey(route_ID)){ ... }
  </code></pre>
  
  <p>also then i want to iterate those values.</p>