maybe i'm a little naive, but i think it shouldn't behave like that. First my code:

   private String ExeName="dc64cmd.exe";
   private String Dir=System.getenv("ProgramFiles(x86)") +"\\12noon Display Changer\\";           
   private String DetachArgument = "-monitor=\"PnP-Monitor (Standard)\" -detach";
   try {
        System.out.println(new File(Dir+ExeName).exists()); 
        //This prints "true" as expected.


        ProcessBuilder pb = new ProcessBuilder(ExeName, DetachArgument);
        pb=pb.directory(new File(Dir));

        pb=pb.redirectError(ProcessBuilder.Redirect.INHERIT);
        pb=pb.redirectOutput(ProcessBuilder.Redirect.INHERIT);
        pb=pb.redirectInput(ProcessBuilder.Redirect.INHERIT);
        //afaik the 3 lines above are not necessary. But just to be sure..

        pb.start();
    } catch (java.io.IOException IOexc) {
        System.err.println(IOexc.toString());
    }

      

        
        
        
      

    

Program output

true
java.io.IOException: Cannot run program "dc64cmd.exe" (in directory "C:\Program Files (x86)\12noon Display Changer"): CreateProcess error=2, Das System kann die angegebene Datei nicht finden

      

        
        
        
      

    

The last part is the German localized version "The system cannot find the file.

I don't understand why on the one hand the file exists, but on the other hand it cannot be found.

I dug a bit into java.lang.ProcessBuilder and found that the Exception was actually thrown in java.lang.ProcessImpl.java on line 189

handle = create(cmdstr, envblock, path,
                    stdHandles, redirectErrorStream);

      

        
        
        
      

    

This exception causes java.lang.ProcessImpl.Start (...) to run (starting at line 83) to close FileInputStreams and FileOutputStreams in the finally declaration for the try-statement. However, while debugging, I noticed that f2.close () (line 141) gets called twice, resulting in an exception being thrown, which is then interpreted as an unkown file.

My first guess would be a mistake, but I think my code is pretty trivial and shouldn't trigger an unconfirmed error.

It is likely that I made a stupid little mistake in my code in the first place ....

Hope you can read my bad english and my bad style, I am not used to writing about code ...

Any help is appreciated.

jdk 1.7.0_03

edit: It might be worth mentioning that the file I want to run is a 64-bit executable, although I installed it in an x86 folder.