title: How to connect two numeric string in jexl?
body: <p>For example:</p>
  
  <pre><code>@Test
  public void test2() {
      JexlEngine jexl = new JexlEngine();
      jexl.setLenient(false);
      jexl.setSilent(false);
      JexlContext jc = new MapContext();
      Expression exp = jexl.createExpression("\"1\"+\"1\"");
      System.out.println(exp.evaluate(jc));
  }
  </code></pre>
  
  <p>actual result is:</p>
  
  <pre><code>2
  </code></pre>
  
  <p>my expected result is:</p>
  
  <pre><code>"11"
  </code></pre>
  
  <p>Please tell me what's wrong in the above example. And how can I get my expected result.</p>
  
  <p>Thanks!</p>