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What is SystemUtils.isJavaAwtHeadless() in Java?

abhilash

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

Overview

isJavaAwtHeadless() is a staticdescribes the methods in Java that can be called without creating an object of the class method of SystemUtils that is used to check whether the headless mode is enabled for Java AWT.

What is Java AWT?

Java AWT stands for Abstract Window Toolkit, which is an API used to develop Graphical User Interfaces in Java.

Many times, developers need to work on graphics-based applications without the need to display user interfaces. In these scenarios, the headless mode is enabled.

How to import StringUtils

The definition of StringUtils 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 StringUtils class as follows:


import org.apache.commons.lang3.StringUtils;

Syntax


public static boolean isJavaAwtHeadless()

Parameters

The method does not accept any parameters.

Return value

This method returns true if the headless mode is enabled. Otherwise, it returns false.

Code

import org.apache.commons.lang3.SystemUtils;
public class Main{
public static void main(String[] args){
boolean isJavaAwtHeadless = SystemUtils.isJavaAwtHeadless();
System.out.printf("The output of SystemUtils.isJavaAwtHeadless() is '%b'.", isJavaAwtHeadless);
}
}

In the code above, we get whether the headless mode is enabled for Java AWT.

Output

The output of the code will be as follows:


The output of SystemUtils.isJavaAwtHeadless() is 'false'.

Running the code above in your system can give a different output, depending on your machine.

RELATED TAGS

java
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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