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import java.util.Iterator;
import java.util.LinkedHashSet;
public class Main {
public static void main(String[] args) {
LinkedHashSet<Integer> lhashSet = new LinkedHashSet<Integer>();
lhashSet.add(new Integer("1"));
lhashSet.add(new Integer("2"));
lhashSet.add(new Integer("3"));
Iterator itr = lhashSet.iterator();
while (itr.hasNext()){
System.out.println(itr.next());
}
}
}
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