Quick Answer

Handle missing file errors gracefully.

Understanding the Issue

This exception occurs when attempting to access non-existent files, requiring proper validation and error handling.

The Problem

This code demonstrates the issue:

Java Error 
try {
    new FileInputStream("missing.txt");
} catch (FileNotFoundException e) {
    // Handle error
}

The Solution

Here's the corrected code:

Java Fixed 
// Solution 1: Check file existence
Path path = Paths.get("file.txt");
if (Files.exists(path)) {
    // Process file
}

// Solution 2: Create parent directories
Files.createDirectories(path.getParent());

// Solution 3: Try-with-resources
try (InputStream in = new FileInputStream("file.txt")) {
    // Use file
} catch (FileNotFoundException e) {
    System.err.println("File not found: " + e.getMessage());
}

// Solution 4: Provide user feedback
if (!Files.isReadable(path)) {
    throw new IOException("File is not accessible: " + path);
}

Key Takeaways

Always validate file accessibility before operations.