Java program to create a TreeSet collection

Java example to create a TreeSet collection.
Submitted by Nidhi, on June 04, 2022

Problem Solution:

In this program, we will create a TreeSet collection with integer elements. Then we will add elements using add() method and print the created TreeSet.

Program/Source Code:

The source code to create a TreeSet collection is given below. The given program is compiled and executed successfully.

// Java program to create a TreeSet collection

import java.io.*;
import java.util.*;

public class Main {
  public static void main(String args[]) {
    TreeSet < Integer > tree = new TreeSet < Integer > ();

    tree.add(10);
    tree.add(20);
    tree.add(30);
    tree.add(40);
    tree.add(50);
    tree.add(60);

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

Output:

TreeSet: [10, 20, 30, 40, 50, 60]

Explanation:

In the above program, we imported the "java.util.*", "java.io.*" packages to use the TreeSet class. Here, we created a public class Main.

The Main class contains a main() method. The main() method is the entry point for the program. And, created a TreeSet collection tree and added integer elements using add() method and printed the TreeSet collection tree.

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