What is NumberUtils.toInt() in Java?

How to import `NumberUtils`

The definition of NumberUtils can be found in the Apache Commons Lang package, which we can add to the Maven project by adding the following dependency to the pom.xml file:

<dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.12.0</version>
</dependency>

For other versions of the commons-lang package, refer to the Maven Repository.

You can import the NumberUtils class as follows.

import org.apache.commons.lang3.math.NumberUtils;

Syntax

public static int toInt(final String str, final int defaultValue)

Parameters

final String str: The string to convert.
final int defaultValue: The default value to return.

Return value

This method returns an int value else the default value if the conversion fails.

Overloaded methods

public static int toInt(final String str)

import org.apache.commons.lang3.math.NumberUtils;
public class Main{
    public static void main(String[] args){
        // Example 1
        String stringToConvert = "23";
        int defaultValue = 24;
        System.out.printf("The output of the method NumberUtils.toInt(%s, %s) is %s", stringToConvert, defaultValue, NumberUtils.toInt(stringToConvert, defaultValue));
        System.out.println();
        // Example 2
        stringToConvert = "233sdf";
        defaultValue = 24;
        System.out.printf("The output of the method NumberUtils.toInt(%s, %s) is %s", stringToConvert, defaultValue, NumberUtils.toInt(stringToConvert, defaultValue));
        System.out.println();
    }
}