Learn More About Runtime Exceptions

In the course of a normal Java operation, it's not uncommon to encounter errors that cause a crash or a malfunction. The overarching category of these errors is called Runtime Exceptions. Java programming code doesn't necessitate the need to catch these errors and the runtime exception often reveals a programming fault. Most programs are expected to deal with a certain amount of unknown volatility, but runtime errors are most often the result of a glitch in development.

Oddly enough, runtime exceptions are employed when a situation that wasn't able to occur actually happens. Sometimes you will receive an error instead of an exception. This usually happens when an application is running low on memory and is based on the fact that exceptions aren't used when a program cannot acquire one. It seems convoluted but the essence is that, in situations where an error might occur, you will receive an exception instead. This is because the program is designed with the tag "catch(Exception e){...}."

Although this seems like an advantage, it's not always beneficial to receive a runtime exception because the program you are running might not be programmed to manage it. Hence, this is a developer's error. The program does not always anticipate the exception except in situations where the exception is the result of bad data, in which case it is able to eliminate it adequately. For example, the "NumberFormatException" can be identified by parsing algorithms. When you encounter an error like this, the best action you can take would be to shut down the program.

There are three frequent runtime exceptions. These consist of the "NullPointerException", the ArrayIndexOutOfBoundsException and the "InvalidArgumentException." The Java Virtual Machine usually causes the first two exceptions listed.

Exception 1:

The NullPointerException is encountered when you try to execute an action that doesn't exist or some part of it doesn't exist.

Exception 2:

The ArrayIndexOutOfBoundsException occurs when you try to access a specific part of a series of data that doesn't exist.

Exception 3:

The InvalidArgumentException is experienced when an incorrect value is communicated.

You should not try to fix any of these exceptions on your own, especially if you are an amateur computer user.

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