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Java program to remove a specified item from the TreeSet collection

Given a TreeSet collection, we have to remove a specified item.
Submitted by Nidhi, on June 07, 2022

Problem statement

In this program, we will create a TreeSet collection with integer elements. Then we will remove the specified element from the TreeSet collection using the remove() method.

Source Code

The source code to remove a specified item from the TreeSet collection is given below. The given program is compiled and executed successfully.

Example of TreeSet.remove() Method in Java

// Java program to remove a specified item 
// from 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(30);
    tree.add(20);
    tree.add(25);
    tree.add(10);

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

    tree.remove(20);

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

Output

TreeSet: [10, 20, 25, 30]
Updated TreeSet: [10, 25, 30]

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. Then we removed the specified item from the TreeSet collection using the remove() method and printed the updated TreeSet.

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