Get JSON response of multiple Array

GSONofMultipleArray.java

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package gsontest;

import java.util.ArrayList;

/**
 *
 * @author sharif
 */
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import java.util.HashMap;
import java.util.Map;

public class GSONofMultipleArray {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

        ArrayList<Object> allList = new ArrayList<>();

        ArrayList<Object> jarrayTable = new ArrayList<Object>();
        ArrayList<Object> jarrayChartTotalMF = new ArrayList<Object>();
        ArrayList<Object> jarrByAgeGroup = new ArrayList<Object>();
        JsonObject objTotal = new JsonObject();

        allList.add(objTotal);
        allList.add(jarrayTable);
        allList.add(jarrayChartTotalMF);
        allList.add(jarrByAgeGroup);
        String allJSON = new Gson().toJson(allList);

        System.out.println(allJSON);

//Or
        HashMap<String, Object> allList2 = new HashMap();
       
        allList2.put("obj", objTotal);
        allList2.put("arr1", jarrayTable);
        allList2.put("arr2", jarrayChartTotalMF);
        allList2.put("arr3", jarrByAgeGroup);

        String allJSON2 = new Gson().toJson(allList2);

        System.out.println(allJSON2);
    }

}