I'm writing a simple JAVA program to password protect files/folders on my computer. Nothing crazy, I own a clothing company and I would like to hide the confidential information that I'm storing in Word doc's and Excel spreadsheets. What I want to do is when certain files are opened, I'd like my JAVA password program to be triggered to ask a password to open the file. Is there code I could add to my program that when certain files are opened the program is triggered or is there a way to link my written program to files on click? Thank you!