[hardwired]

Here's an idea (pseudocode):

Code:

    String[] array = new String[5];
    ...
    array = expand(array, 10);

private String[] expand(String[] array, int size) {
    String[] temp = new String[size];
    System.arraycopy(array, 0, temp, 0, array.length);
    for(int j = array.length; j < size; j++)
        temp[j] = "";
    return temp;
}