How do I make an auto updater for my program?

[boynedmaster]

I'm making a program and I want it so that:
1. There's a seperate program (only for me) that can change the download link on an HTML page
2. A java class to check the download link, and if it is different, request an update.

How do I do this?

[boynedmaster]

Bump

[Norm]

1)To change the contents of a page on a server you will need to either have code that executes on the server that you can give instructions to
or be able to upload a new version of the page to the server.

2)Where will the program execute that is to check the html page for a change? What would it do to request an update?

[boynedmaster]

1) Yeah. I'll have a download link whenever a new update comes. I want a program to change the HTML download with the file exe.
2) They get a JFrame prompt that says "New update. Would you like to install now?"
And two buttons that say yes or no.

[Tolls]

Can I suggest looking up Java Web Start and jnlp?
It does all this for you.

But if you want to do this by hand, you need a launcher that goes off and checks for the update. If there is one the you show the JFrame, if not then it launches the application itself.