Antwort When should you avoid try catch? Weitere Antworten – Should I avoid try-catch
Try-catch is best used in parts of your code when you think mistakes will occur that are out of your control for whatever reason. 2. When Should You Avoid Using Try-Catch If you know an error is likely to happen, you shouldn't use the try-catch statement since you'd rather debug the problem than disguise it.You use this when you don't want an error in your script to break your code. While this might look like something you can easily do with an if statement, try/catch gives you a lot of benefits beyond what an if/else statement can do, some of which you will see below.❌Don't Use Try-Catch For Input Validation
Or if you're expecting the user to have an age within a certain range, we also need input validation. We need to make sure the input the user provides is what we are expecting. Try-catch is not the tool to do that.
Is it good practice to catch exception : It is only good practice to catch a specific exception if it can actually be handled by the catch block. Very often, programmers assume that the fault can be handled at all, close to the point of occurrence. This is often wrong.
Does try-catch reduce performance
In general, wrapping your Java code with try/catch blocks doesn't have a significant performance impact on your applications. Only when exceptions actually occur is there a negative performance impact, which is due to the lookup the JVM must perform to locate the proper handler for the exception.
What is the alternative to try-catch : The alternative to a try/catch is checking for the error before it can happen. Like If you're catching null-reference exceptions, you could instead add if(t!= null)'s. And that can be better since you can handle each specific instance, maybe even fixing it instead of quitting.
When working with try-catch blocks, keep the following best practices in mind: Keep the try block as small as possible, focusing on the code that may throw an exception. This makes your code more readable and easier to maintain.
Try/catch is used when an Exception can be thrown from the code, and you catch it in the catch-clause, which is an object oriented way to handle errors. You can't catch Exceptions with if/else blocks – they share nothing with try/catch.
Why not use if-else instead of try catch
In 'if-else' the conditions and the codes inside the blocks are got mixed, so that it becomes unreadable if there is many 'if-else' blocks. In 'try-catch' the codes to handle the exceptions and what exception to be handled, that are easily readable. In 'if-else', we have one else block corresponding to one if block.The alternative to a try/catch is checking for the error before it can happen. Like If you're catching null-reference exceptions, you could instead add if(t!= null)'s. And that can be better since you can handle each specific instance, maybe even fixing it instead of quitting.It's sometimes better to catch a standard exception and to wrap it into a custom one. A typical example for such an exception is an application or framework specific business exception. That allows you to add additional information and you can also implement a special handling for your exception class.
Catching general exception types can hide run-time problems from the library user and can make debugging more difficult.
Why not use if-else instead of try-catch : In 'if-else' the conditions and the codes inside the blocks are got mixed, so that it becomes unreadable if there is many 'if-else' blocks. In 'try-catch' the codes to handle the exceptions and what exception to be handled, that are easily readable. In 'if-else', we have one else block corresponding to one if block.
What is excessive use of try-catch : The Downsides of Excessive Try and Catch
1. Error hiding: Overusing try-catch blocks can lead to a situation where exceptions are caught but not sufficiently handled. This can result in a silent failure, where errors go unnoticed, leading to unexpected consequences.
Does try-catch affect performance
Excessive try-catch blocks introduce a performance overhead. While this impact is often negligible, in performance-critical scenarios, it becomes crucial to minimize unnecessary try-catch constructs to maintain optimal execution speed. Indiscriminate use of try-catch can mask genuine issues within the code.
Yes, try-catch blocks can be useful here, except I would add to catch the exact exception, not just all exception expected. Also, don't forget to do a "finally" block. In Python it would be try-except.The try/catch only executes one time, so if you want to validate an input, you need to place the try/catch in a loop.
Are try catches slow : This answer will obviously vary from compiler to compiler and application to application, but generally yes — “try and catch” is slower than some of the other canonical alternatives to error handling.