title: GSON mapping null value for POJO properties
body: <p>I'm trying to use GSON 2.2.2 (for the very first time) to map JSON into a Java POJO. I'm hitting a 3rd party RESTful web service and this is an example of the JSON I'm getting back:</p>
  
  <pre><code>{
      "response": {
          "job":{
              "eta":-1,
              "status":"approved",
              "mt":1,
              "lc_tgt":"fr",
              "body_src":"Please translated me.",
              "body_tgt":"S'il vous plaît traduire moi.",
              "unit_count":3,
              "tier":"machine",
              "credits":0,
              "ctime":"2013-02-07 14:56:12.391963",
              "lc_src":"en",
              "slug":"0",
              "job_id":"NULL"
          }
      },
      "opstat":"ok"
  }
  </code></pre>
  
  <p>The POJO I'm trying to map this into is:</p>
  
  <pre><code>public class Job {
      // correlates to "eta"
      private int eta;
  
      // correlates to "body_src"
      private String sourceBody;
  
      // correlates to "ctime"
      private java.util.Date creationTimestamp;
  
      // Getters and setters for all 3 properties
  }
  </code></pre>
  
  <p>When I run the following code, I don't get any exceptions, but the print statement just prints "<code>null</code>":</p>
  
  <pre><code>// Hit the 3rd party service and get the JSON (example above).
  JSONObject json = hitRestfulWebService();
  
  Gson gson = new Gson();
  
  // json.toString = "{response":{"job":{ ..."
  Job job = gson.fromJson(json.toString(), Job.class);
  
  System.out.println(job.getSourceBody());
  </code></pre>
  
  <p>My only guess is that GSON can't figure out how to map the 3 JSON fields to my 3 <code>Job</code> properties. Can someone help me figure out what this mapping needs to be? Thanks in advance.</p>