import java.util.HashSet;
public class Main {
public static void main(String[] args) {
HashSet<Integer> hSet = new HashSet<Integer>();
hSet.add(new Integer("1"));
hSet.add(new Integer("2"));
hSet.add(new Integer("3"));
System.out.println(hSet);
boolean blnRemoved = hSet.remove(new Integer("2"));
System.out.println(blnRemoved);
System.out.println(hSet);
}
}
/*
[1, 2, 3]
true
[1, 3]
*/
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