Java Programming Test Question 3

Import Java.util.HashSet;  Public class JPTQuestion3 {    publicstaticvoid  main (string[] args) {          New  HashSet ();          for ( short i = 0; i < i++) {            shortset.add (i);             -1);        }        System.out.println (Shortset.size ());}    }

Output: 100.

If you change the loop variable to int type, then

Import Java.util.HashSet;  Public class JPTQuestion3 {    publicstaticvoid  main (string[] args) {          New  HashSet ();          for (int i = 0; i < i++) {            shortset.add (i);            Shortset.remove (i-1);        }        System.out.println (Shortset.size ());}    }

Output: 1

What a pit it is. Moreover, this hashset actually does not specify the generic type to use the-_-

Why is the range smaller than int not removed, and greater than or equal to the int range will be removed? Generics are specified regardless of the result.

Java Programming Test Question 3