ArrayList usage example

Here's a simple Java language example that demonstrates some of the ArrayList methods:

    ArrayList list1 = new ArrayList();
    list1.add("this is a test");
    list1.add(0, "Hello");

    ArrayList list2 = new ArrayList();
    list2.addAll(list1);
    list1.clear();

    System.out.println(list1); 
    System.out.println(list2); 
    System.out.println(list2.contains("this is a test"));

Its output would be:

[]
[Hello, this is a test]
true

The first line prints [] to indicate list1 was empty, and list2 contains two Strings (in this order): Hello and this is a test. Finally, the word true will be printed to the console because this is a test is stored inside list2 of the ArrayList object.