Listing the Files or Subdirectories in a Directory

      
import java.io.File;

public class Main {
  public static void main(String[] argv) throws Exception {
    File dir = new File("directoryName");

    String[] children = dir.list();
    if (children == null) {
      System.out.println("does not exist or is not a directory");
    } else {
      for (int i = 0; i < children.length; i++) {
        String filename = children[i];
        System.out.println(filename);
      }
    }
  }
}

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Listing the Files or Subdirectories in a Directory : Directory « File Input Output « Java

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