Null Handling in Java: Explanation & Practice

Problem summary

Write code that handles potential null values without crashing.

Starter code

public class Main {
    public static void main(String[] args) {
        String text = null; // Test case 1
        
        // Safely get length of text
        // Print length or "null" message
    }
}

Expected output and test cases

• Handle null

  Text is null

• Valid string

  Length: 5

• Empty string

  Length: 0

Hints

1. Check for null before using
2. Or use try-catch for NPE
3. Consider Optional for cleaner code

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