Remove specified element from Java TreeSet example

This Java Example shows how to remove a specified object or element contained in Java TreeSet object using remove method.

import java.util.TreeSet;

public class RemoveSpecifiedElementFromTreeSetExample {

	public static void main(String[] args) {

		// create object of TreeSet
		TreeSet tSet = new TreeSet();

		// add elements to TreeSet object

		tSet.add(1);
		tSet.add(2);
		tSet.add(3);

		System.out.println("TreeSet before removal : " + tSet);

		/**
		 * To remove an element from Java TreeSet object use, boolean
		 * remove(Object o) method. This method removes an element from TreeSet
		 * if it is present and returns true. Otherwise remove method returns
		 * false.
		 **/

		boolean blnRemoved = tSet.remove(2);

		System.out.println("Was 2 removed from TreeSet ? " + blnRemoved);

		System.out.println("TreeSet after removal : " + tSet);
	}
}

The output is:


TreeSet before removal : [1, 2, 3]
Was 2 removed from TreeSet ? true
TreeSet after removal : [1, 3]