Main.java Source code

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Here is the source code for Main.java

Source

import java.util.SortedSet;
import java.util.TreeSet;

public class Main {

    public static void main(String[] args) {
        TreeSet<String> tSet = new TreeSet<String>();
        tSet.add("1");
        tSet.add("2");
        tSet.add("3");
        tSet.add("4");
        tSet.add("5");
        SortedSet sortedSet = tSet.headSet("3");
        System.out.println("Head Set Contains : " + sortedSet);
    }
}