Following best practices for exception handling becomes even more crucial at the industry level when software must be highly reliable, maintainable, and scalable. This blog will review some of the best practices for exception handling in Java applicable to enterprise-level software development. For more detailed information about Exception Handling Best Practices in Java, Join JAVA Training in Chennai at FITA Academy.
Best Practises of Exception Handling:
Use Different Exception Classes for Different Error Types:
Using separate exception classes for different types of problems is one of the most essential best practices for exception handling in Java. This benefits the application in two ways: first, it makes the code more transparent and more understandable; second, it allows it to handle different types of failures differently. For example, if you’re creating a banking application, you might wish to utilise a particular exception class to handle insufficient money issues.
Exceptions Must Be Caught at the Proper Level of Abstraction:
Catching exceptions at the proper level of abstraction is critical. Exceptions caught too high in the call stack can make the code more difficult to read and debug. Exceptions caught too low in the call stack can result in duplicated code and make the code more difficult to maintain. In general, exceptions should be caught at a level where appropriate action may be taken to recover from the problem.
Log and Handle Exceptions in a Consistent and Informative Manner:
Industry-level software development must log and handle exceptions consistently and informally. The logs should contain enough information about the exception to allow for rapid diagnosis and resolution of the problem. The structure and amount of detail of the logs should also be consistent. Exceptions should also be handled to offer relevant feedback to the user, such as by showing a user-friendly error message or directing the user to the right action.
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Avoid Empty Catch Blocks and Swallowing Exceptions:
Empty catch blocks and swallowing exceptions are common Java exceptions handling anti-patterns. Empty catch blocks might make it challenging to maintain and troubleshoot the code. Swallowing exceptions can obscure critical error information, making diagnosing and resolving problems difficult. Letting the exception propagate up the call stack or handling it meaningfully is usually preferable.
When Appropriate, Propagate Exceptions Up the Call Stack:
In some circumstances, it may be appropriate to propagate exceptions up the call stack rather than handling them at the current level. This is beneficial when the caller is better qualified to handle the error or when the error needs to be noted or reported at a higher level.
Finally, use the following blocks for cleanup and resource management:
Finally, blocks are an excellent technique to ensure that cleanup and resource management activities are always completed, even if an exception occurs. This is especially true for enterprise-level software development when resource leaks and other failures can have catastrophic effects.
Select Checked or Unchecked Exceptions According to the Situation:
There are two kinds of exceptions in Java: checked and unchecked. Unchecked exceptions do not have to be caught or declared by the caller method, whereas checked exceptions do. Selecting the appropriate sort of exception based on the circumstances is critical. Checked exceptions are beneficial for recoverable errors, whereas unchecked exceptions are better suited for fatal errors that cannot be recovered from.
Conclusion:
You will have understood Exception Handling Best practices in Java in this blog. Join Java Training in Bangalore to gain excellent placement training and course certification.