Get Folder Size

package StreamsFilesAndDirectories4;

import java.io.File;

public class GetFolderSize {
    public static void main(String[] args) throws NullPointerException {

        String path = "C:\\Users\\User\\Desktop\\Java Advanced - 10.01.23 - 13.09.22\\src\\StreamsFilesAndDirectories4\\04. Java-Advanced-Files-and-Streams-Exercises-Resources\\Exercises Resources";
        File folder = new File(path);

        File[] allFiles = folder.listFiles();

        int folderSize = 0;
        if(allFiles != null) {

            for (File file : allFiles) {
                folderSize += file.length();
            }
        }
        System.out.println("Folder size: " + folderSize);
    }
}