Function which will give the names of all items in a folder [duplicate]

Question

Here's what I have to do, but I have no idea where to start:

Write a program that allows you to browse images (gif, jpg) from the specified directory. Pictures are subsequently shown in the window, as follows:

• a) the catalog and the time interval between image (in seconds) is determined at the start of the program on the basis of information from the file,
• b) images are shown in their original sizes,
• c) adjust the image to the frame

I know the very basic question, but just getting started with Java. Is there some sort of function, which will give me the names of all items in a folder?

Answer 1

If you want to have File Objects for all files within a Directory, use:

new File("path/to/directory").listFiles();

If you instead just want the names use

new File("path/to/directory").list();

Answer 2

If you want only the image files, you can use File.listFiles( FileFilter filter ):

 File[] files = new File( myPath ).listFiles( 
    new FileFilter() {
       boolean accept(File pathname) {
          String path = pathname.getPath();
          return ( path.endsWith(".gif") 
              || path.endsWith(".jpg")
              || ... );
       }
    });