How to Easily Determine Your Apache Tomcat Version in Windows Registry

Описание: Learn how to find out the `Apache Tomcat version` installed on your computer through various methods, including the Registry Editor and command-line scripts.
---
This video is based on the question https://stackoverflow.com/q/68497460/ asked by the user 'Soumyadeep Auddy' ( https://stackoverflow.com/u/14281722/ ) and on the answer https://stackoverflow.com/a/68526048/ provided by the user 'Mark Thomas' ( https://stackoverflow.com/u/1299005/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to find tomcat version in registry editor?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Easily Determine Your Apache Tomcat Version in Windows Registry

If you’re working with Apache Tomcat, understanding which version you have installed can be critically important, especially when ensuring compatibility with dependencies or planning upgrades. Many users turn to the Windows Registry to find this type of information, but the process isn’t always straightforward. In this guide, we will explore the best methods to locate your Apache Tomcat version, regardless of how it’s installed on your system.

The Challenge: Locating Tomcat Version in the Registry

Many solutions suggest checking specific registry paths, such as:

SOFTWARE\Apache Software Foundation\TomcatVERSION

However, you may find that this exact path may not exist. Instead, you might only come across folders like:

SOFTWARE\Apache Software Foundation\Tomcat\9.0\Tomcat9

In this folder, attributes may hint at the version but will vary with different installations, leading to confusion and frustration. So, how can you reliably find your Tomcat version?

Solution Overview: Methods to Find Your Tomcat Version

While there's no single fixed path in the Registry that will show you the exact version of Tomcat installed, there are several alternative methods you can use:

1. Using Version Scripts

If you have access to your Tomcat installation, you can utilize built-in scripts to determine the version:

Locate the Script:

Navigate to the $CATALINA_HOME/bin directory where Tomcat is installed.

Look for version.bat (Windows) or version.sh (Unix/Linux).

Run the Script:

Simply execute the script in a command prompt or terminal, and it will report the exact version of Tomcat, alongside OS and JVM information.

Note: Ensure that your JAVA_HOME environment variable is correctly set for accurate results.

2. Checking the MANIFEST.MF File

Another reliable location for your Tomcat version is within the JAR files themselves:

Locate catalina.jar:

Go to the $CATALINA_HOME/lib directory and find catalina.jar.

Open MANIFEST.MF:

Look in the /META-INF/MANIFEST.MF file within catalina.jar for an entry labeled Implementation-Version. This will specify the exact version of Tomcat installed.

3. Verifying Server Properties

A different method to check for the installed version is by examining specific properties files:

File Location:

Navigate to /org/apache/catalina/util/ServerInfo.properties in the catalina.jar file mentioned above.

Reading the File:

Open this file to find more detailed server information, including the version of Tomcat.

4. Checking Startup Logs

Lastly, another straightforward way to find the version of Tomcat is by looking at the startup logs:

Tomcat Logs:

When you start Tomcat, it logs the version information in its startup log files. Check these logs, typically found in the $CATALINA_HOME/logs directory, to find your version number quickly.

Conclusion

While finding the Apache Tomcat version via the Windows Registry may not yield the expected results, there are several effective methods to retrieve this information. Whether you choose to run a script, inspect JAR files, or read startup logs, each method gives you a reliable way to determine your installed Tomcat version. These approaches not only help streamline your development and dependency management processes but also ensure you're always using compatible versions.

By utilizing these strategies, you can resolve any confusion and confidently know the version of Apache Tomcat running on your system.