Multiple ArrayList of ArrayLists example

package com.concretepage;
import java.util.*;
public class MultipleArrayListOfArrayListsJava {
public static void main(String[] args) {

ArrayList<ArrayList<String>> arrayListBasicExample = new ArrayList<ArrayList<String>>();

ArrayList<ArrayList<ArrayList<String>>> arrayListMain = new ArrayList<ArrayList<ArrayList<String>>>();
ArrayList<ArrayList<String>> arrayList1 = new ArrayList<ArrayList<String>>();

ArrayList<String> arrayList1Sub1 = new ArrayList<String>();
arrayList1Sub1.add("Balaji"); arrayList1Sub1.add("Padma");
arrayList1Sub1.add("Appa"); arrayList1Sub1.add("Amma");
arrayList1.add(arrayList1Sub1);
arrayListMain.add(arrayList1);
ArrayList<String> arrayList1Sub2 = new ArrayList<String>();
arrayList1Sub2.add("BALAJI");   arrayList1Sub2.add("PADMA");
arrayList1Sub2.add("APPA");     arrayList1Sub2.add("AMMA");
arrayList1.add(arrayList1Sub2);
arrayListMain.add(arrayList1);

for(int i=0;i<arrayListMain.size();i++) {
System.out.println("arrayListMain Size is " + arrayListMain.size());
for(int j=0;j<arrayList1.get(i).size();j++) {
System.out.println("arrayList1.get(i).size is " + arrayList1.get(i).size());
System.out.println("arrayList1.get(i).get(j) is " + arrayList1.get(i).get(j));
}
}

}
}