How to Create Executable JAR Files on Linux

Discover solutions to common issues when creating executable JAR files on Linux. Learn to make your own JAR files run smoothly without terminal commands.
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How to Create Executable JAR Files on Linux: A Comprehensive Guide

If you're trying to create executable JAR files on Linux, you may have encountered some frustrating issues. Despite being able to run downloaded JAR files by simply double-clicking them, the ones you create yourself seem to require running them through the terminal using a specific command. This can be an inconvenience, especially if you prefer the simplicity of double-click access. In this guide, we'll delve into the problems surrounding executable JAR files and provide a step-by-step guide to creating them correctly on Linux.

Understanding the Problem

When you create JAR files using popular IDEs like IntelliJ or through command line instructions, the complications often arise due to configuration settings. Here are a few reasons why your custom-created JAR files may not run as expected:

Java Version Conflicts: There might be discrepancies between the Java versions.

Manifest File: Your JAR file might not have the correct manifest file indicating the main class.

File Permissions: The file may not have the necessary permissions set to execute.

The Solution to Creating Executable JAR Files

To help you create an executable JAR file that runs with a double-click, follow these organized steps:

Step 1: Write a Simple Java Program

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Compile the Java Program

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Create the JAR File

After compiling, it's time to create an executable JAR file. Use the following command:

[[See Video to Reveal this Text or Code Snippet]]

c: Create a new JAR file.

e: Specify the main class (ShowVersion).

Step 4: Test the Executable JAR File

Bonus Tips

Check Java Installation: Ensure that you have Java installed correctly on your system. Use java -version in the terminal to verify it.

File Permissions: If the JAR file doesn’t run with a double-click, check the file permissions to ensure it’s executable.

Conclusion

Creating executable JAR files on Linux doesn't have to be a hassle. By following the above steps, you should be able to create a JAR file that launches effortlessly. Whether you're new to Java or simply need a refresher on creating executables, understanding these basics will save you time and frustration. With your newly created JAR files, you'll be able to double-click and run them just like any downloaded JAR file!