Storing Recent Notes in Cache
To speed up access to recent notes, your app will store them in a lightweight cache file. In this task, you'll create a new file called "cache.txt" and confirm that it was successfully created. This sets the stage for saving frequently used data.
All the necessary packages from java.io have been imported for you.
Diese Übung ist Teil des Kurses
Input/Output and Streams in Java
Anleitung zur Übung
- Create a
Fileobject for"cache.txt". - Check if the file already exists.
- If the file exists, delete it.
- Create a new file named
"cache.txt".
Interaktive Übung
Vervollständige den Beispielcode, um diese Übung erfolgreich abzuschließen.
class CacheDataManager {
public static void main(String[] args) {
try {
// Create a File object
File cacheFile = ____ ____("cache.txt");
// Check if the file exists
if (____.____()) {
// Attempt to delete the file
if (____.____()) {
System.out.println("Old cache file deleted successfully.");
} else {
System.out.println("Failed to delete the old cache file.");
}
}
// Create the file for cache.txt
if (____.____()) {
System.out.println("New cache file created successfully.");
} else {
System.out.println("Failed to create the new cache file.");
}
} catch (IOException e) {
System.out.println("An error occurred: " + e.getMessage());
}
}
}