Nested try-catch

Exception handling is a crucial concept in Java, ensuring that runtime errors don’t crash the program. Java provides the try-catch mechanism to handle exceptions gracefully. Sometimes, handling exceptions requires more than just a single try-catch block, leading to nested try-catch blocks.

A nested try-catch block is a try block inside another try block. This structure allows handling exceptions at multiple levels, providing more precise error handling.

• Handling different exceptions at different levels: Some exceptions may need to be handled immediately, while others can be escalated.
• Ensuring specific operations are protected: Certain code segments may require individual exception handling within a larger context.
• Providing fine-grained control over exception handling: This improves debugging and makes code more robust.

Syntax

Output

• The outer try block contains two risky operations.
• The inner try block attempts a division by zero, which throws an ArithmeticException.
• The inner catch block catches the ArithmeticException and handles it.
• Execution continues in the outer try block, where an attempt to access an invalid array index throws an ArrayIndexOutOfBoundsException.
• The outer catch block handles this exception, ensuring the program doesn’t crash.