taking input from several files

[adi.norules]

hi buddies
i want to take input from several files.
I 've got a folder which has 5 files and I want to use them in my program as an input. I take the input from 1 file as
FileInputStream fstream = new FileInputStream("file.txt");
DataInputStream in = new DataInputStream (fstream);

now I have more files to take imput from..how do I do that??plzz help..