ArrayList of filenames

[Conrad McLaughlin]

Is it possible to an arraylist (string) of the names of files within a directory? eg. textfiles

i'm guessing you would need a while loop. but how to use fileinputreader?

[Keith Lynn]

In the java.io.File class there is a method called list() which will return a String array containing all the files and directories within the java.io.File if it is a directory.

[Conrad McLaughlin]

Thanks. I'm trying to work with it now.

but i keep getting:

   
non-static method list() cannot be referenced from a static context

Any tips on how to actually write the code to save filenames in string array?

[Conrad McLaughlin]

I solved the problem:

    
public class File
{
   public static void main(String[ ] args)
   {
java.io.File file;
java.io.File dir = new java.io.File(".");
 
String[] list = dir.list();
 
System.out.println(list[9]);
   }
 

}

Thanks for the help.

[Layne Lund]

Note that there is also a listFiles() method that returns an array of File objects. I often find that this is much more useful since I typically need File objects to deal with the files rather than just Strings representing their names. Also, it saves the step of creating my own File object for each String.

For more information, you should check out the Java API docs. These are always helpful to figure out the methods in a given class. Of course you have to know where to look, so that's why you should practice navigating them.

Layne