title: Parse php json(no key) to Java
body: <p>I got json data:</p>
  
  <pre><code>[["13021031","icon_nopic.png"]]
  </code></pre>
  
  <p>It has no "key".</p>
  
  <p>I have tried multiple variations of this, include Gson,but none of them seem to work because I think the json I got didn't have a key.Is there a good solution to the problem. Thanks in advance.</p>