How can I declare dynamic String array in Java

Question

I am using String Array declare as zoom z[]=new String[422];. But this array stores value from 0 to 32, so I got null pointer except

Answer 1

You want to use a Set or List implementation (e.g. HashSet, TreeSet, etc, or ArrayList, LinkedList, etc..), since Java does not have dynamically sized arrays.

List zoom = new ArrayList<>();
zoom.add("String 1");
zoom.add("String 2");

for (String z : zoom) {
    System.err.println(z);
}

Edit: Here is a more succinct way to initialize your List with an arbitrary number of values using varargs:

List zoom = Arrays.asList("String 1", "String 2", "String n");