in java how to get files in a given directory

Question

I want to write a java code, where given a directory name, I should be able to get all the files starting with list (so something like list*) and read each file one by one (line

Answer 1

You can list using a file filter as described here

Answer 2

Well, the most central class would be File.

Besides that there are some classes that File's methods need (like FileFilter etc.)

You can also try and have a look at utility libraries like Apache Commons IO.