RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.geeksforgeeks.org/java/treeset-floor-method-in-java-with-examples/ below:

TreeSet floor() method in Java with Examples

Last Updated : 11 Jul, 2025

The

floor()

method of

java.util.TreeSet<E>

class is used to return the greatest element in this set less than or equal to the given element, or null if there is no such element.

Syntax:

public E floor(E e)

Parameters:

This method takes the value

as a parameter which is to be matched.

Return Value:

This method returns the

greatest element

less than or equal to e, or

null

if there is no such element

Exception:

This method throws the

NullPointerException

if the specified element is null and this set uses natural ordering, or its comparator does not permit null elements Below are the examples to illustrate the

floor()

method

Example 1: Java


 // Java program to demonstrate
// floor() method
// for Integer value

import java.util.*;

public class GFG1 {
    public static void main(String[] argv) throws Exception
    {
        try {

            // create tree set object
            TreeSet<Integer> treeadd = new TreeSet<Integer>();

            // populate the TreeSet using add() method
            treeadd.add(10);
            treeadd.add(20);
            treeadd.add(30);
            treeadd.add(40);

            // Print the TreeSet
            System.out.println("TreeSet: " + treeadd);

            // getting the floor value for 25
            // using floor() method
            int value = treeadd.floor(25);

            // printing the floor value
            System.out.println("Floor value for 25: "
                               + value);
        }

        catch (NullPointerException e) {
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

TreeSet: [10, 20, 30, 40]
Floor value for 25: 20

Example 2:

for

NullPointerException Java


 // Java program to demonstrate
// floor() method
// for NullPointerException

import java.util.*;

public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {
        try {

            // create tree set object
            TreeSet<Integer> treeadd = new TreeSet<Integer>();

            // populate the TreeSet using add() method
            treeadd.add(10);
            treeadd.add(20);
            treeadd.add(30);
            treeadd.add(40);

            // Print the TreeSet
            System.out.println("TreeSet: " + treeadd);

            // getting the floor value for null
            // using floor() method
            System.out.println("Trying to get"
                               + " the floor value"
                               + " for null");

            int value = treeadd.floor(null);

            // printing the floor value
            System.out.println("Floor value for 25: "
                               + value);
        }

        catch (NullPointerException e) {
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

TreeSet: [10, 20, 30, 40]
Trying to get the floor value for null
Exception thrown : java.lang.NullPointerException

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4