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HashSetDemo7.java

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import java.util.HashSet;

import java.util.Iterator;

public class HashSetDemo7 {

public static void main(String[] args) {

HashSet<String> set = new HashSet<>();

set.add("A");

set.add("a");

set.add("B");

set.add("b");

System.out.println(set);

try {

Iterator<String> iterator = set.iterator();

while (iterator.hasNext()) {

System.out.println(iterator.next());

}

} catch (Exception e) {

System.out.println("Exception");

}