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Java Forum / General / April 2007Manipulating a Third-Party Java Application from another Java Application
I have an existing third party application that is written in Java, and then run via an exe wrapper. I'm trying to automate certain user input to this application (and retrieve the text from specific controls to monitor progress, output, etc). Normally I would do this using Window's API function such as FindWindow, GetWindowText, SendMessage, etc. However, none of these functions will work with the third-party java application, as I can get only the handle of the parent JFrame, but the other controls seem to have no handles. Is there anyway to manipulate or communicate with the controls on the third party application from my own Java application? I've done a lot of searching and reading, but have yet to find anything that directly applies to what I'm trying to do. Any insight or assistance is appreciated. Thanks, Travis Troyer >..I'm trying to automate certain user input to this application .. .. >..I can get only the handle of the >parent JFrame, .. See JFrame.getContentPane().getComponents() HTH  SignatureAndrew Thompson http://www.athompson.info/andrew/ > travis.tro...@gmail.com wrote: > >..I'm trying to automate certain user input to this application .. [quoted text clipped - 3 lines] > > See JFrame.getContentPane().getComponents() Thanks for your reply. That should work for me, if I can figure out how to access the JFrame in Java. To clarify my initial post, I know how to use Windows API in VB and C# to get a window handle, but I'm not sure how I would use Java to get the third-party JFrame and then use it in my program. Thanks, Travis >> travis.tro...@gmail.com wrote: >> >..I'm trying to automate certain user input to this application .. .. >> See JFrame.getContentPane().getComponents() > [quoted text clipped - 3 lines] >not sure how I would use Java to get the third-party JFrame and then >use it in my program. The best strategy might be wo 'unwrap it' from the .exe and instead call the main() from within your own code. Then you can probably locate the JFrame from within your app., and keep a reference to it. What does the manufacturer recommend? SignatureAndrew Thompson http://www.athompson.info/andrew/ > The best strategy might be wo 'unwrap it' from the .exe > and instead call the main() from within your own code. > Then you can probably locate the JFrame from within > your app., and keep a reference to it. After looking at the directory contents, I may have found the two jar files used by the application, but I'm unable to launch them. I received a "Failed to load Main-Class manifest attribute." error. Based on the configuration file I found on the wrapper, I tried to modify the main class location in the jar file, but no luck. I'm honestly not sure how I would call the main function from within my own code as you suggest (my Java experience is limited, I just thought this process might be easier using Java, since the third party application is written in Java)... > What does the manufacturer recommend? The manufacturer has no recommendations, we're basically on our own. Using Winspector, I was able to get the handle and related information for the JFrame. Is there no easy way to get the handle from Java, and then access this JFrame? .. >...(my Java experience is limited, ... * >> What does the manufacturer recommend? > >The manufacturer has no recommendations, .. Why not? Lost the power of speech and developed dyslexia due to some freak accident, have they? >Using Winspector, I was able to get the handle and related information >for the JFrame. Is there no easy way to get the handle from Java, and >then access this JFrame? * If I was over at your dev. environment, it would take but a few minutes to sort where the main was. So, "heck yeah it's easy". Perhaps you should hire an *experienced* Java programmer/consultant for this task. SignatureAndrew Thompson http://www.athompson.info/andrew/ > > The best strategy might be wo 'unwrap it' from the .exe > > and instead call the main() from within your own code. [quoted text clipped - 10 lines] > this process might be easier using Java, since the third party > application is written in Java)... What, exactly, did you find and what did you try? It's not clear from your description what you had no luck with. If you can find out what the name of the "main" class is, you can run that class's main method directly, either from the command line or from another java program. It sounds like you tried running the individual jars, and none of them have a preconfigured main class, which probably means the name of the class in use is in the EXE launcher somewhere, or in one of its config files. > > What does the manufacturer recommend? > [quoted text clipped - 3 lines] > for the JFrame. Is there no easy way to get the handle from Java, and > then access this JFrame? The win32 handle for the application's window is going to be close to useless if the application uses Swing (which it sounds like it does), since Swing doesn't use the Win32 API for much. All drawing and window components in a Swing application happen inside the JVM that owns the window. In order to navigate a Swing application's component hierarchy you need to be able to access the objects in that JVM. That either means running your own code in that JVM or attaching a java debugger to it. Free MagazinesGet these publications absolutely FREE for up to 12 months. 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