Use System.arraycopy to duplicate array : Array Basics « Collections « Java Tutorial

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public class ArrayCopyDemo {
  public static void main(String[] args) {
    char[] copyFrom = { 'd', 'e', 'c', 'a', 'f', 'f', 'e', 'i', 'n', 'a', 't',
        'e', 'd' };
    char[] copyTo = new char[7];

    System.arraycopy(copyFrom, 2, copyTo, 0, 7);
    System.out.println(new String(copyTo));
  }
}