public class Test
{
   public static void main(String args[])
   {
      String a = "1234567890ABCDEF";
      int b[] = hexstr2array(a, 4);

      for(int c: b)
         System.out.printf("%d ", c);
      System.out.println();
   }

   public static int[] hexstr2array(String input, int length)
   {
      int[] output = new int[length];

      for(int i = 0; i < length; i++)
         if(i < input.length() / 2)
            output[i] = Integer.parseInt(input.substring(i*4, i*4+4), 16);
         else
            output[i] = 0;

      return output;
   }
}