// https://stackoverflow.com/questions/20897020/why-integer-class-caching-values-in-the-range-128-to-127
public class Cache {
   public static void main(String[] args) {
      Integer i, j;
      for (i = -200; i <= 200; i++) {
         j = i + 0;
         System.out.println(i + " " + i.equals(j) + " " + (i == j));
      }
   }
}