title: Get a 01 from an int instead of 1 in a for loop
body: <p>This loop inserts employee Ids like 1, 2, 4,.. 30.</p>
  
  <pre><code>for(int i=01;i&lt;31;i++){
    Employee e = new Employee();
    e.setEmpId(i);
    aList.add(e);
  }
  </code></pre>
  
  <p>However, I require the ids in the format 01, 02, 03 .. so on. 
  Is there a simple way I can achieve this ? </p>