Hi,

In short, this is a sketch of the JSON object I want to parse in JAVA:

{
    object1: {
            item1: //[String | Array | Object] ,
            item2: // ...
            //<> more items
    object2: { // }
    //<> more objects
}

These are the POJO s I created for parsing (I'll leave out the import statements for brevity's sake):

(1) The representation of the complete JSON object

public class JObjectContainer {

    private List<JObject> jObjects ;

    public JObjectContainer() { // }

    //get & set methods

}

(2) The representation of the nested objects:

 public class JObject {

    private String id ;
    private List<JNode> jObjects ;

    public JObject() { // } 

    //get & set methods

}

(3) The representation of the items:

 public class JNode {

    private JsonElement item1 ;
    private JsonElement item2 ;
    //<> more item fields

    public JNode() { // }

    //get & set methods

}

Now, creating a Gson instance (FileReader for importing the jsonFile),

 Gson gson = new Gson() ;
 JObjectContainer joc = gson(jsonFile,JObjectContainer.class) ;

I get a NullPointerException whenever I try to access the parseable object (e.g. through a ListIterator). Gson does however create an object of the class I specified and does not throw any subsequent errors.

I know that this has been done before. So, what am I missing?

TIA