Automated Testing for Java Swing GUIs

Automated Testing for Java Swing GUIs

21 May 2024 Stephan Petzl Leave a comment Tech-Help

Automating tests for Java Swing GUIs can be a challenging task, especially when dealing with complex user interfaces. In this guide, we will explore some of the most effective tools and frameworks available for automating tests in Java Swing applications. By the end of this article, you will have a clear understanding of which tool might be best suited for your needs.

There are several tools available for automating Java Swing GUI tests. Here are some of the most recommended ones:


AssertJ is a fork of the FEST framework, which is no longer actively developed. AssertJ, however, is actively maintained and supports Java 8 and newer versions. It provides a rich set of assertions for various popular libraries such as Guava and Joda Time. The framework is well-documented, open-source, and free to use.


FEST is another option that integrates well with JUnit and can take screenshots of failed tests. It includes default component hunting methods that search for component names, which need to be set manually. Despite its useful features, it’s worth noting that FEST is no longer actively maintained.

Cucumber and Swinger

Cucumber, combined with Swinger, allows for writing functional acceptance tests in plain English for Swing GUI applications. Swinger uses NetBeans’ Jemmy library to drive the application. Here is an example of how a test scenario might look:

Scenario: Dialog manipulation
Given the frame "SwingSet" is visible
  And the frame "SwingSet" is the container
When I click the menu "File/About"
Then I should see the dialog "About Swing!"
Given the dialog "About Swing!" is the container
When I click the button "OK"
Then I should not see the dialog "About Swing!"


Jemmy is another tool under consideration for automating GUI testing. It is a library used for testing Java GUI applications and is known for its promising results.


The java.awt.Robot class is a lower-level tool that allows for the automation of GUI tasks. It provides control over the mouse and keyboard, making it possible to automate interactions with the GUI. However, it requires significant effort to set up and maintain tests.

Other Tools

  • QF-Test: A tool that provides robust testing capabilities for Java GUIs.
  • SwingUnit: Works with JUnit and is not based on component coordinates.
  • Marathon: An integrated testing environment for Java/Swing GUI test automation.
  • Sikuli: Uses screenshots to automate GUI testing.
  • ReTest: Combines functional regression testing with AI-based monkey testing.
  • Gooey: A basic and under-development programmatic testing tool for Swing applications.

Choosing the Right Tool

When selecting a tool for automating Java Swing GUI tests, consider the following factors:

  • Maintenance and support: Ensure the tool is actively maintained and well-documented.
  • Ease of use: Look for tools that provide a user-friendly interface and require minimal setup.
  • Integration: Check if the tool integrates well with your existing testing frameworks and CI/CD pipelines.
  • Features: Evaluate the features offered by the tool, such as screenshot capture, component hunting, and scripting capabilities.

Enhancing Your Testing Workflow with Repeato

If you are looking for a comprehensive solution to automate your mobile app tests, consider using Repeato. Repeato is a no-code test automation tool for iOS and Android that allows you to create, run, and maintain automated tests for your apps quickly and efficiently.

Repeato’s intuitive test recorder and computer vision-based approach make it particularly fast to edit and run tests. Additionally, Repeato provides a scripting interface for advanced testers to automate complex use cases. While explicit web testing support is on its way, Repeato already allows testing websites inside an Android emulator or device, providing a versatile solution for various testing needs.

For more information on how Repeato can streamline your testing process, visit our documentation section.

By carefully selecting the right tool and leveraging advanced solutions like Repeato, you can significantly improve the efficiency and effectiveness of your Java Swing GUI testing efforts.

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