Java TreeSet First Last Element

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import java.util.TreeSet;

public class JavaTreeSetFirstLastElement {

	public static void main(String[] args) {

		TreeSet tSet = new TreeSet();

		tSet.add("1");
		tSet.add("3");
		tSet.add("2");
		tSet.add("5");
		tSet.add("4");

		System.out.println("Lowest value Stored in Java TreeSet is : " + tSet.first());

		System.out.println("Highest value Stored in Java TreeSet is : " + tSet.last());

	}
}

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