Hi, I successfully invoked some exe application through JSP.Using Runtime Class.Now,the Problem is ... I want to know,whether the application is already invoked by other User. if so,i want to through some message to current invoker. pls,.It's very urgent...help me...
You'd have to interogate the OS to find out what processes are running - which could be easily enough done on UNIX (ps -e | grep -e <whatever> or something) and less easily done with Windows/MacOS. You'll probably be able to access running process with some native code on Windows. But neither way is particularaly robust - you need to know that your process will have a unique name on the OS, which it might not. A better way perhaps would be to launch the process from a singleton - that way (assuming it starts) your app would know that it had already started the process.