Top 4 Java Exceptions Raygun can help fix

Top 4 Java Exceptions Raygun can help fix Provider relatedResourceTech Stuff Callum Gavin April, Leave a Comment

There is a bunch of Java exceptions that is common to all code bases, and frequently occur at both compile time when imp Lementing, and runtime when your application are in the wild. Crucial to has visibility around–most developers may use a logging framework, or perhaps a Hand-rolle D notification System. The advantage of using a real error tracking service is huge. Here is some of the most common Java exceptions, and what Raygun can capture these at runtime and help you find t He source of the bug, leading to reliable software and happy end users.

NullPointerException

Tony Hoare's billion-dollar mistake of including ' null ' in a modification to the Algol language must still being taken into a Ccount when dealing with the type system in Java (you'll of course note that it's a legit failure state, which can be ha Ndled in safer ways in languages like Rust). The act of accessing an uninitialized variable, or one, have been deliberately set to null, blows up strongly-typed cod E at runtime as the type system can ' t provide any guarantees for the object (by design). Knowing when your code attempts the use of NULL variables is crucial. If you're ' re in a Web context, frequently a third-party API could return some error state in response to a request, and the Var Iables which would has otherwise been set would be null.

(I know–it ' s Knuth, not Hoare, but close enough. The hat sells it.)

Seriously though, Raygun'll capture every instance of your code attempting to use null objects, and report the stack tra Ce so can pinpoint the issue. The Raygun4java provider also allows you to set custom data, so can provide the state of relevant variables, allowing Easily diagnose nullpointerexceptions on your production hardware from your local machine.

IOException

This exception type (and others in it family) can be thrown when invalid file access occurs, which are most likely to OCCU R when implementing a local application if debugging is easier. Networking errors can also result in this exception being thrown, which are more critical if this happens in production W EB applications or services.

It's particularly interesting how often connections can fall on the network layer–for instance, database query Tim Eouts. These can quite frequent, especially if your code is running in a public cloud with noisy neighbours, or in general if Resource contention is a factor. Raygun would capture instances of these exceptions, giving you insights as-how often these is occurring over time, whic H would is very difficult to see from view log files.

Concurrent (threading) exceptions

Exceptions like Interruptedexception was raised when your thread receives a interrupt while it was executing. You must catch this or return it to is handled higher up (depending on whether it makes sense for the current method to do SO). These and similar concurrent exceptions may only start to appear under heavy load in production when contention for thread ing resources becomes a factor. It's important to use a tool like Raygun the can track and the group these sensibly so what can see how often and when these is occurring as their transient nature can be quite difficult to reproduce locally.

IllegalArgumentException

This is one of you should are throwing in your own code, so that at runtime when a method receives invalid input can throw An appropriately typed exception. Raygun can show instances of these, and as in the "null pointer case," can attach custom data to see the particular INVA Lid arguments that were passed in (for instance, zero as the denominator for a Divide () method). This would is invaluable when developing anything the accepts user input, for instance a web API or service, mobile app, or desktop application.

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Top 4 Java Exceptions Raygun can help fix