A VS Code extension for Windows that lists all running Java processes via jps -v, and for Tomcat processes specifically shows the CATALINA_BASE folder and HTTP port. You can stop any process directly from the tree view.

Features

Tree view ("Java Processes" in the Activity Bar) listing every process from jps -v.
Tomcat processes (main class Bootstrap) are auto-detected and show:
- Folder name (from -Dcatalina.base, e.g. tomcat-8080)
- HTTP port (read from that folder's conf/server.xml, ignoring the AJP connector and ignoring the JPDA debug port from -agentlib:jdwp=...,address=NNNN)
Stop Process — runs taskkill /PID <pid> /F after a confirmation prompt.
Open Tomcat Folder — reveals CATALINA_BASE in Windows Explorer.
Copy PID / Copy Full Command Line to clipboard.
Manual refresh button, or optional auto-refresh on an interval.
Hover tooltip shows full command line and resolved details.

Requirements

A JDK's bin folder (containing jps.exe) must be on PATH, or set jpsViewer.jpsPath in Settings to the full path, e.g.: C:\Program Files\Java\jdk-17\bin\jps.exe
Windows (uses taskkill to stop processes).

Settings

Setting	Default	Description
`jpsViewer.jpsPath`	`jps`	Path to the jps executable
`jpsViewer.autoRefreshInterval`	`0`	Seconds between auto-refreshes; `0` disables

Running / Developing

npm install
npm run compile

Then press F5 in VS Code (with this folder open) to launch an Extension Development Host with the extension loaded.

Packaging a .vsix to install

npm install -g @vscode/vsce
vsce package

This produces jps-tomcat-viewer-0.0.1.vsix. Install it via:

code --install-extension jps-tomcat-viewer-0.0.1.vsix

or through the Extensions view's "Install from VSIX..." command.

Notes / limitations

Tomcat's HTTP port is not in jps -v output directly — the value after -agentlib:jdwp=...address=NNNN is the remote-debug port, not the HTTP port. This extension reads the real port from conf/server.xml in CATALINA_BASE (falling back to CATALINA_HOME if needed).
If CATALINA_BASE/CATALINA_HOME paths contain spaces, the simple -D...= parsing here (which splits on whitespace) may not extract them correctly, since JVM args generally aren't quoted in jps -v output. This is uncommon for Tomcat installs but worth knowing.
Stopping a process is a hard taskkill /F (equivalent to killing the JVM). Tomcat won't get a chance to run shutdown hooks. A graceful catalina.bat stop option could be added later if needed.