Basics
Apex Errors
Handling Apex Errors
Apex errors use try-catch with custom exceptions for robustness.
Introduction to Apex Error Handling
Error handling in Apex is a critical aspect of writing robust and reliable applications. Apex provides structured exception handling through try-catch blocks, allowing developers to manage and respond to errors gracefully. Additionally, custom exceptions can be created to handle specific error conditions unique to your application.
Using Try-Catch Blocks in Apex
The try-catch block is used to handle exceptions in Apex. When an error occurs within a try block, the control is transferred to the catch block. This mechanism helps in preventing the application from crashing and allows for graceful error recovery.
Creating Custom Exceptions
Custom exceptions in Apex allow you to define new exception types that suit your particular application needs. Creating a custom exception involves extending the Exception class.
Throwing and Catching Custom Exceptions
Once you have defined a custom exception, you can throw it in your code using the throw statement, and catch it using a catch block.
Best Practices for Error Handling in Apex
- Avoid Empty Catch Blocks: Always handle exceptions properly rather than suppressing them.
- Use Custom Exceptions Judiciously: Only create custom exceptions when necessary to avoid cluttering your codebase.
- Log Exception Details: Use
System.debug()or a logging framework to record exceptions for debugging purposes. - Graceful Degradation: Ensure your application can continue to function or provide meaningful feedback to users when an error occurs.
