I am searching for information how to create such app:
Java or c++ application - auto website checking and predefined actions
(better would be java, because I already know some Java)

I want to create a program that i could run on my computer, and it would check the predefined website , every some minutes, to search for code,after it would found some html/text it would do the action (press button or etc.) and would search/wait/scan again and so on.

How are there kind of programs called ? anybody has some examples ? or reference to information about them , how to create such and etc.

I would be very grateful.