Get a Process Object by Process Id

Question

how can I get a Process object by a certain ProcessId in Java.

I am using JNA to create a process, because I want to open a application in the background.

WinBase.STARTUPINFO startupInfo = new WinBase.STARTUPINFO();
startupInfo.dwFlags = 1;

WinBase.PROCESS_INFORMATION.ByReference processInformation = new WinBase.PROCESS_INFORMATION.ByReference();

Kernel32.INSTANCE.CreateProcess(null, "C:\\Program Files\\...", null, null, true, new WinDef.DWORD(0), Pointer.NULL, System.getProperty("java.io.tmpdir"), startupInfo, processInformation);

int prozessId = processInformation.dwProcessId.intValue();

Why don't you use a Process? How to you *not* open a process in the background in Java? — Peter Lawrey, Jan 14 '14 at 12:59
I have try this, but my application did always start in the foreground. I am using the ProcessBuilder for this — Higune, Jan 14 '14 at 13:00
I suppose this question is rather about Windows API programming than Java! — Gyro Gearless, Jan 14 '14 at 13:09
Possible duplicate http://stackoverflow.com/questions/683427/launch-application-in-a-minimized-state-from-java — Peter Lawrey, Jan 14 '14 at 14:51

score 1 · Accepted Answer · answered Jan 14 '14 at 13:20

1

This isn't possible. The API for Process and ProcessBuilder don't allow you to create Process instances for existing processes; you can always only create new child processes with them.

answered Jan 14 '14 at 13:20

Aaron Digulla

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Get a Process Object by Process Id

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