Java TreeSet Example

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import java.util.TreeSet;

public class JavaTreeSet {

	public static void main(String[] args) {

		TreeSet treeSet = new TreeSet();

		treeSet.add(new Integer("1"));
		treeSet.add(new Integer("2"));
		treeSet.add(new Integer("3"));

		System.out.println("TreeSet :" + treeSet);
	}
}
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