Java vs. Javaw — What's the Difference?
By Tayyaba Rehman — Published on November 10, 2023
Java launches Java applications with a console window; Javaw does so without a console window.
Difference Between Java and Javaw
Table of Contents
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Key Differences
Java is the standard runtime command for executing Java applications. When a Java application is launched using the Java command, it opens a console window, which displays any output (like print statements) or errors. On the other hand, Javaw is designed to launch Java applications without this console window.
Many desktop applications built on Java prefer to use Javaw because they don’t require a separate console window. This provides a cleaner user experience. Conversely, applications that need to provide real-time console output, such as debugging information, will likely use the Java command.
When troubleshooting a Java application, using the Java command can be helpful, as it displays error messages directly in the console. With Javaw, these messages aren't immediately visible since there's no console window attached.
Java and Javaw are both part of the Java Runtime Environment (JRE). While they both execute Java bytecode, the presence or absence of a console window is what differentiates them.
It's crucial for developers to decide between Java and Javaw based on their application's needs. For instance, background processes might be better suited for Javaw to avoid unnecessary console windows, while tools for developers might lean towards Java to display relevant output.
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Comparison Chart
Console Window
Launches with a console window.
Launches without a console window.
Usage
Suitable for apps requiring console outputs.
Preferred for desktop apps without output.
Error Visibility
Displays error in the console window.
Errors aren't immediately visible.
Part of
Java Runtime Environment (JRE).
Java Runtime Environment (JRE).
Best For
Tools, debugging, and console-based applications.
Background processes, GUI applications.
Compare with Definitions
Java
A high-level, object-oriented programming language.
She learned Java to develop Android apps.
Javaw
Part of the Java Runtime Environment specifically for windowed applications.
Ensure you use Javaw if you don't want a command prompt to appear.
Java
An island in Indonesia known for its rich culture and history.
Bali is located to the east of Java.
Javaw
The silent version of the Java command.
If the application has no console output, execute it with Javaw.
Java
A software platform providing a runtime environment for executing Java applications.
The software requires the Java Runtime Environment to run.
Javaw
A tool in the Java toolkit that provides a cleaner user experience for GUIs.
When launching the game, it's recommended to use Javaw for seamless gameplay.
Java
A slang term for coffee.
I need my morning Java to start the day.
Javaw
An executable in the Java platform distinct from Java because of its non-console nature.
The software automatically uses Javaw for a smoother interface.
Java
Brewed coffee.
Javaw
A command to run Java applications without a console window.
For the desktop application, we use Javaw to prevent any console pop-ups.
Java
A blend of coffee imported from the island of Java.
Java
Coffee in general.
Java
A dance popular in France in the early 20th century.
Java
One of the islands of the Malay Archipelago belonging to the Netherlands.
Java
Java coffee, a kind of coffee brought from Java.
Java
An object-oriented computer programming language, derived largely from C++, used widely for design and display of web pages on the world-wide web. It is an interpreted language, and has been suggested as a platform-independent code to allow execution of the same progam under multiple operating systems without recompiling. The language is still (1997) under active development, and is evolving.
Java
An island in Indonesia south of Borneo; one of the world's most densely populated regions
Java
A beverage consisting of an infusion of ground coffee beans;
He ordered a cup of coffee
Java
A simple platform-independent object-oriented programming language used for writing applets that are downloaded from the World Wide Web by a client and run on the client's machine
Java
The name of a type of sparrow found in Java island.
The Java Sparrow is a popular pet bird in some cultures.
Common Curiosities
What is Java used for?
Java is a programming language used to develop a wide range of applications, from mobile to web and desktop applications.
Can Java and Javaw run the same applications?
Yes, both can run the same applications, but the difference lies in the presence or absence of a console window.
When would I choose to use Java over Javaw?
Use Java when you need to see console outputs or errors directly, like in debugging scenarios.
Is Javaw better for desktop applications?
Yes, Javaw is often preferred for desktop applications that don't require console output for a cleaner user experience.
Is Java related to JavaScript?
No, Java and JavaScript are two distinct programming languages with different purposes and designs.
Why might a desktop application use Javaw?
A desktop application might use Javaw to prevent unnecessary console windows from appearing, providing a smoother user experience.
Can Java applications be run on mobile devices?
Yes, Java is used for Android mobile application development.
Are Java and Javaw installed together?
Yes, both Java and Javaw are part of the Java Runtime Environment (JRE) package.
Can I replace Java with Javaw in a script?
Yes, but be cautious since you won't see any console outputs when using Javaw.
How does Javaw differ from Java?
Javaw runs Java applications without a console window, while Java does it with a console window.
Is Java platform-independent?
Yes, Java is platform-independent, meaning you can run Java applications on various operating systems without modification.
Why would an error not show up when using Javaw?
Javaw does not display a console window, so any error messages or outputs aren't immediately visible.
Which should I use for a background process: Java or Javaw?
Javaw is preferable for background processes to avoid displaying an unnecessary console window.
Is there a performance difference between Java and Javaw?
The primary difference is the console display, not performance. Both commands execute Java bytecode in the same way.
Do I need to install something special to use Javaw?
No, Javaw comes as part of the standard Java Runtime Environment (JRE) installation.
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Written by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
