Question

I have a java servlet running in a server, plus an ‘exe file’ located in the same server,

i want , in respond to the client passed parameters to the servlet , to run the exe file located on the server and show it to the client , even a screen shot,,

any ideas??!! please help

Answer 1

You can use Process and Runtime classes

Eg :

Runtime r = Runtime.getRuntime();    
Process p = r.getRuntime().exec("C:\\newfolder\\run.exe");  

For taking screenshot refer to how to take sc in java

This way you can save the image and then send this image to user.

For sending image to client refer to how to send file from sever to client

these are.the pieces , you need to put them together

UPDATE 1 : to kill the exe you can use p.destroy() ( not a good implementation though, as it forcefully kills the process)

UPDATE2 : to check if the process( which is executing your exe) hence to check if the exe is running or not, you can refer to how to check if a process is running