android - Jackson JSONArray nested in a JSONArray not parsing -

not sure if i'm using correct syntax or declaring classes right doesn't seem parse jsonarray inside jsonarray.

what doing wrong?

here's json file:

{  "response": {      "status": 200  },  "items": [      {          "item": [          {              "body": "computing",              "subject": "math",              "attachment": false          }          ]       },      {          "item": {              "body": "analytics",              "subject": "quant",              "attachment": true          }      }  ],  "score": 10,  "uri": "http://localhost/v2.0.0/surveys/5511fa0b7ccabf820b08172a/5512d3de7ccabf820b081731/",  "thesis": {      "submitted": false,      "title": "masters",      "field": "sciences"  }  } 

here classes i'm using:

public class thing {     public response response;     public arraylist<itemwrapper> items;     public int score;     public uri uri;     public thesis thesis;      public uri geturi() {         return uri;     }      public void seturi(uri uri) {         this.uri = uri;     }      public response getresponse() {         return response;     }      public void setresponse(response response) {         this.response = response;     }      public arraylist<itemwrapper> getitems() {         return items;     }      public void setitems(arraylist<itemwrapper> items) {         this.items = items;     }      public int getscore() {         return score;     }      public void setscore(int score) {         this.score = score;     }      public thesis getthesis() {         return thesis;     }      public void setthesis(thesis thesis) {         this.thesis = thesis;     } }  class response {     public int status;      public int getstatus() {         return status;     }      public void setstatus(int status) {         this.status = status;     } }  class itemwrapper {     public arraylist<item> item;      public arraylist<item> getitem() {         return item;     }      public void setitem(arraylist<item> item) {         this.item = item;     } }  class item {     public string body;     public string subject;     public boolean attachment;      public string getbody() {         return body;     }      public void setbody(string body) {         this.body = body;     }      public string getsubject() {         return subject;     }      public void setsubject(string subject) {         this.subject = subject;     }      public boolean isattachment() {         return attachment;     }      public void setattachment(boolean attachment) {         this.attachment = attachment;     } }  class thesis {     public boolean submitted;     public string title;     public string field;      public boolean issubmitted() {         return submitted;     }      public void setsubmitted(boolean submitted) {         this.submitted = submitted;     }      public string gettitle() {         return title;     }      public void settitle(string title) {         this.title = title;     }      public string getfield() {         return field;     }      public void setfield(string field) {         this.field = field;     }     }