How to find a javaw process started by JWS?

Question

I am executing a JWS process from my java application (parent application) using Runtime.getRuntime().exec() . JWS downloads a java application (child application) from Tomcat and runs the application on local machine. I need to find the process object of the child application in my parent application. The reason for observing the child application is to show status of all the java applications started by parent app in a frame. Parent application can start various java applications via JWS. The code looks below
Process proc = null;
proc = Runtime.getRuntime().exec("javaws http://myMachine:7003/apps/test.jnlp");
The Process object in above snippet is of javaws process not of the child application started via JWS.
Is there a mechanism by which I can get handle to the childs process?

Answer 1

We tried using jps on windows to get the process id using flag passed as argument. However, this also doesnot helps because javaws and javaw both have the same flag displayed, which means we cannot distinguish between both the processes. To explain more
The code snippet looked like as:
proc = Runtime.getRuntime().exec("javaws http://localhost:7003/apps/test.jnlp?Dpidflag=someValue");
On running jps as soon as above line executed gave the result
1420 com.sun.javaws.Main http://localhost:7003/apps/test.jnlp?Dpidflag=someValue
The same result kept on popping for sometime, but after that it gave the result
2448 com.sun.javaws.Main http://localhost:7003/apps/test.jnlp?Dpidflag=someValue
Uhhh..A new process id.
Some investigation revealed that the first process id is of javaws process which gets killed in a few seconds. The second process id is of javaw process. Now we can guess that waiting for 10-20 seconds might give us correct process id but not for sure.