Too many java.exe processes due to netbeans

[abhishek.jain]

Hi All,



When I use netbeans for a long time, more than one java.exe processes are created. They consume a lot of memory.

After some time even tomcat starts throwing error that Tomcat is already running on the port even if the tomcat is

Not running. I have to kill java.exe processes manually so that my tomcat can run. Do anyone know how to solve this

Problem?



Regards

Abhishek

[JavaBean]

Hi Abhishek,

Every time when you run your program (java application you are developing), netbeans spawns a new java.exe to run your program. If your program does not exit properly (e.g. with System.exit(1)) then those JVMs will continue to run and consume memory. This is the case for swing/console applications. I guess a similar logic exists for web application if you are developing a web application. So make sure you are using netbeans properly. You can read a basic netbeans web application tutorial showing how to run your web applications and find what is wrong in your approach.

[abhishek.jain]

Hi Sir,

Thanks for your reply but I have a question. How this thing is related to my tomcat? Let us say my program is not exiting properly but when i close my netbeans , wouldn't it shut down the bundled tomcat automatically.

[JavaBean]

How this thing is related to my tomcat? Let us say my program is not exiting properly but when i close my netbeans , wouldn't it shut down the bundled tomcat automatically.

If you shut down netbeans in the normal way, you are right, netbeans also should close bundled tomcat but when you close it by killing the java.exe processes, i guess this may happen. Even if bundled tomcat s closed, the port used might not have been released properly.

[abhishek.jain]

Hi Sir

I got the mistake i was doing . First i ran the project in debug mode, then without stopping the debug mode i run my project without debug mode ,then again i start in debug mode and vice versa. After some time i got this error
Starting of Tomcat failed, the server port 8084 is already in use.
See the server log for details.
BUILD FAILED

Then i checked dos command prompt there were 14-15 lines showing the usage of 8084 port some were showing FIN_WAIT_2 and some CLOSE_WAIT state These ports are not released unless i restart my system or manually kill java.exe.
But i have a question as i am new to this netbeans why this starting and restarting in different modes give problem.

[JavaBean]

But i have a question as i am new to this netbeans why this starting and restarting in different modes give problem.

As far as i remember and as far as i understood your problem, there was a "Stop debugging" menu item in netbeans and netbeans expect you to stop debugging before going to another mode. This can be considered as a feature bug but i think your case is a rare one :)

[abhishek.jain]

Hi Sir

I agree your point . I think it is a feature bug . This problem is also faced by some of my colleagues.

Thanks and Regards
Abhishek

[nextechie]

Thx a lot.... i tried as you said above and it is now working fine...
but i dont understand how we can shut down apart from killing java.exe explicitly........ i have gone through tutorial and my execution was correct...

neway....for now..it is working fine.....