How to update application when it is running ??
Posted on 2002-06-04
I want to update my pure java application when it is runing. I have a button called "update". When this button is clicked, it will download new version to temp folder for this application from server and update it. In detail, some of files for this application will be moved to backup folder and new files will be moved from temp folder to destination folder. I use below java classes to move files:
File oldf=new File("c:/../oldFile");
File newf=new File("c:/../newFile");
My problem: When oldFile is not refered/referenced by application, this moving will be successful. If oldFile is refered/referenced by application, this moving will fail. How to handle this problem ??
When I plan to use System.exit(o), then, update application, when System.exit() is called , it shutdown everything. I cann't do anything. I cann't do update. How can I shutdown my application without using System.exit() ? so I can do update after shuting down app. Thanks for help