To get json of requied form

Question

I need to create a json like this

[
    {
        "name": "Michael Bruce",
        "gender": "Male",
        "designation": "System Architect"
    },
    {
        "name": "Jennifer Winters",
        "gender": "Female",
        "designation": "Senior Programmer"
    },
    {
        "name": "Donna Fox",
        "gender": "Female",
        "designation": "Office Manager"
    },
    {
        "name": "Howard Hatfield",
        "gender": "Male",
        "designation": "Customer Support"
    }
]

I tried to make it with this program ...

 import java.io.PrintWriter;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
 import java.io.FileWriter;



 public class hello{

 public static void getJSONArray() throws JSONException {

           /* JSONArray jo= new JSONArray();

            JSONObject obj1= new JSONObject();
            obj1.put("A","a");

            JSONObject obj2= new JSONObject();
            obj2.put("B","b");

            JSONObject obj3= new JSONObject();
            obj3.put("B","c");

            jo.put(obj1);
            jo.put(obj2);
            jo.put(obj3);

            System.out.println(jo.toString());*/


            /*-----------------------------*/
            JSONObject mainObj = new JSONObject();
            for(int p=0;p<5;p++){
                JSONObject jo1= new JSONObject ();
           String strr= Integer.toString(p);
           String strr2=Integer.toString(p+1);
            jo1.put("name", strr );
            jo1.put("gender", strr2);
            jo1.put("designation",strr2);
            JSONArray ja = new JSONArray();
            ja.put(jo1);


            mainObj.accumulate("employees", ja);
            }
            /*System.out.println(mainObj);
              PrintWriter writer = new PrintWriter("neww.json", "UTF-8");
            writer.println("The first line");
            writer.println("The second line");
            writer.close();*/
            try{
             // create new file
             String content = mainObj.toString();

             String path="E:\\a\\hi.txt";
             File file = new File(path);

                // if file doesnt exists, then create it
                if (!file.exists()) {
                    file.createNewFile();
                }

                FileWriter fw = new FileWriter(file.getAbsoluteFile());
                BufferedWriter bw = new BufferedWriter(fw);
                // write in file
                bw.write(content);
                // close connection
                bw.close();
          }catch(Exception e){
              System.out.println(e);
          }




 }

            public static void main(String args[]) throws JSONException{
            getJSONArray();

            }

            }

but i am getting json of the form as

{
    "employees": [
        [{
            "gender": "1",
            "name": "0",
            "designation": "1"
        }],
        [{
            "gender": "2",
            "name": "1",
            "designation": "2"
        }],
        [{
            "gender": "3",
            "name": "2",
            "designation": "3"
        }],
        [{
            "gender": "4",
            "name": "3",
            "designation": "4"
        }],
        [{
            "gender": "5",
            "name": "4",
            "designation": "5"
        }]
    ]
}

What change should i make in my java code to get the json of the type i have shown first.I have written my json to a file,. I tried this link How to create correct JsonArray in Java using JSONObject

But i am getting output as

{
    "employees": [{
        "gender": "5",
        "name": "4",
        "designation": "5"
    }]
}