jQuery Grid Plugin - jqGrid

this is my jsp code-

JSONObject  responcedata=new JSONObject();   

responcedata.put("total",totalrow);     responcedata.put("page",cpage);     responcedata.put("records",rcount);    Report obj= new Report(); responcedata=obj.ReportGrid(responcedatal); 

System.out.println(responcedata); 

I m getting json data in this form

{"total":"21","rows":[{"cell":["HS","H","10","5","G","9288"],"id":"1"},{"cell":["",null,null,null,"G","2099"],"id":"2"},{"cell":["HS","F","3","53","G","86578"],"id":"3"},{"cell":["HS","F","7","26","G","8268"],"id":"4"},{"cell":["HS","F","8","54","G","221"],"id":"5"},{"cell":["HS","F","5","77","G","1020"],"id":"6"},{"cell":["HS","H","14","14","G","73334"],"id":"7"},{"cell":["HS","C","21","1","G&B","1512"],"id":"8"},{"cell":["HS","F","2","105","G","4960"],"id":"9"},{"cell":["HS","F","4","21","G","86889"],"id":"10"}],"records":11}

I used this json string then jqgrid is displaying data but when i use json  object responcedata in my example then it only shows loding but data is not displaying.