How can I use libraries in Java?

How can I use libraries in Java?

You can use libraries in Java by importing them into your project. Do you have a specific library in mind?

Yes, I'm interested in using Apache Commons.

Great choice! You can add Apache Commons to your project by including it in your build tool, like Maven or Gradle. Would you like a sample code?

Yes, please provide a sample code for using Apache Commons Lang.

Here's a simple example:

import org.apache.commons.lang3.StringUtils;

public class Example {
    public static void main(String[] args) {
        String str = "  Hello World!  ";
        System.out.println(StringUtils.trim(str)); // Outputs: 'Hello World!'
    }
}

This code uses the StringUtils class to trim whitespace from a string.