Get your own Java server
import java.io.File;
import java.io.IOException;

public class Main {
  public static void main(String[] args) throws IOException {
    File myFile = new File("filename.txt");
    myFile.createNewFile();
    File myFolder = new File("myFolder");
    myFolder.mkdir();
    System.out.println(myFile.isDirectory());
    System.out.println(myFolder.isDirectory());
  }
}

              
false
true