Verifying note locations

Before accessing a saved note, your app should confirm it's where it should be. In this final exercise, you'll check whether specific files and folders exist and print relevant messages, just like verifying shelves before filing paper notes.

この演習はコースの一部です

Input/Output and Streams in Java

コースを見る

演習の手順

Create a File object notesDir that points to notes.
Create a new directory named notes.
List all contents of the directory named notes.
Retrieve the absolute path of the file named "note.txt".

実践的なインタラクティブ演習

このサンプルコードを完成させて、この演習に挑戦してみましょう。

class DirectoryManager {

    public static void main(String[] args) {
        try {
            // Create a directory
            File notesDir = ____ ____("notes");
            if (____.____()) {
                System.out.println("Directory 'notes' created successfully");
            }

            File noteFile = new File("notes/note.txt");
            if (noteFile.createNewFile()) {
                System.out.println("File 'note.txt' created successfully");
            }

            // List contents of the directory
            File[] files = ____.____();
            if (files != null) {
                for (File f : files) {
                    System.out.println("File: " + f.getName());
                }
            }
            
			// Retrieve and print the absolute path of the file
            System.out.println("Absolute Path: " + ____.____());

        } catch (Exception e) {
            System.out.println("An error occurred: " + e.getMessage());
        }
    }
}

コードを編集して実行