Question

i want to store Arraylist inside Another List, some thing like this i know its wrong but pretty much like this….

 List list=new ArrayList();
 list.add(new("element1","element2","element3",element4=?);
 list.add(new("element5","element6","element7",element8=?);

now if u see the above code its ok and fine to add elements or first row to list up to third element but the fourth element is another array[string array] how to add it or append it to the first row of element.
same with the second row.

NOTE:- element4 and element8 are also differ in length means element4 has 2 string and element 8 has 10 strings.

when i display the list it should show list like this

  The first row of list is
  element1  element2  element3  element4.1  element4.2 
  the second row of list is
  element5  element6  element7  element8.1  element8.2 element8.3 element8.4 element8.5 element8.6 element8.7 element8.9 element8.10

Answer 1

Have you tried following way:

    List list = new ArrayList();
    list.add(Arrays.asList("element1", "element2", "element3",
            Arrays.asList("element4.1", "element4.2")));
    list.add(Arrays.asList("element5", "element6", "element7",
            Arrays.asList("element8.1", "element8.2", "element8.3")));

    // print values
    System.out.println(list.get(0));
    System.out.println(list.get(1));