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public class ShortSet {
  public static void main(String[] args) {
    HashSet<Short> s = new HashSet<Short>();
      for (short i = 0; i < 100; i++) {
        s.add(i);
        // Cast of i-1 is safe, because value is always representable
        Short workingVal = (short) (i-1);
        ... // other code may update workingVal

        // Cast of i-1 is safe, because value is always representable
        s.remove(((i % 2) == 1) ? Short.valueOf((short) (i-1)) : workingVal);
      }
    System.out.println(s.size());
  }
}