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copied!<p>In response to a few things in the original question, note the following three things:</p> <ol> <li>Gson does not require deserialization to static inner classes.</li> <li>It's only necessary to use a generified <code>TypeToken</code> if the type to be deserialized to is a generified collection. If the type to be deserialized to only <em>contains</em> such a collection, then use of a generified <code>TypeToken</code> is not necessary.</li> <li>A major benefit of using an API like Gson or Jackson is for simple mapping and serialization/deserialization of Java data structures to/from JSON. So, explicite use of components like <code>JsonElement</code> can be avoided.</li> </ol> <p>With the example JSON corrected as</p> <pre><code>{ "context": "context", "cpuUsage": "cpuUsageValue", "name": "thename", "rates": { "definition": [ { "key": "name", "type": "string" }, { "key": "rate", "type": "double" } ], "rows": [ { "name": "thename1", "rate": "therate" }, { "name": "thename2", "rate": "therate2" } ] } } </code></pre> <p>...then the following deserializes (and serializes) simply and as expected.</p> <pre><code>import java.io.FileReader; import java.util.List; import com.google.gson.Gson; public class Foo { public static void main(String[] args) throws Exception { Gson gson = new Gson(); Container container = gson.fromJson(new FileReader("input.json"), Container.class); System.out.println(gson.toJson(container)); } } class Container { private String context; private String cpuUsage; private String name; private Rates rates; } class Rates { private List<Definition> definition; private List<Row> rows; } class Definition { private String key; private String type; } class Row { private String name; private String rate; } </code></pre>

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