Getting the filenames of all files in a folder

To get the filenames of all files in a folder in Java, you can use the File class and its list method.

Here's an example:

import java.io.File;

File folder = new File("/path/to/folder");
File[] listOfFiles = folder.listFiles();

for (File file : listOfFiles) {
  if (file.isFile()) {
    System.out.println(file.getName());
  }
}

This will print the filenames of all files in the specified folder. If you want to include subfolders, you can use the listFiles method with a FileFilter to recursively list all files in the folder and its subfolders.

Here's an example:

import java.io.File;

File folder = new File("/path/to/folder");
File[] listOfFiles = folder.listFiles(new FileFilter() {
  @Override
  public boolean accept(File file) {
    return file.isFile();
  }
});

for (File file : listOfFiles) {
  System.out.println(file.getName());
}

This will print the filenames of all files in the specified folder and its subfolders.