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Bind Exception, Netbeans 6.7.1 and Jetty server running Grails applications

While developing Grails applications on Netbeans IDE 6.7.1, I noticed an issue with the inbuilt servlet container, Jetty that is packaged with Netbeans IDE. Sometimes, Jetty server wouldn't stop even if we stop from the "Services" tab of the Netbeans IDE. It might show that it is already stopped under the "Services" section while it is still running in the background. Any attempts to Run the grails application after this event, will fail. You may get errors saying "Port already in Use" or "Address already in use: bind". The environment is windows/xp/vista. I'm assuming Jetty is using Port 8080 by default. The exception message in the console says "Server failed to start: java.net.BindException"

Run the following command from the command prompt.

netstat -o -n -a | findstr 8080
You may get output as below:

TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 7972

In the above line, the PID(Process Identifier) of the application using this port is 7972.

The second step is to launch the Window Task Manager.
Go To "Processes" tab
If the PID column is not visible - From the menubar of the task manager, Select View -> Select Columns.
We get series of options with checkboxes. Select PID from this list.
Identify the PID matching the process running on Port 8080 and choose "End Process".

On MAC
> lsof -i -P | grep 8080

You may choose to use Kill command to stop the process after identifying the process id using the above command.

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