In this article, we will be covering the following basics of exception handling.
- What is meant by the handle exception
- What is meant by exception handling is the features that handle the errors and try to maintain the flow of the code.
This exception explains why errors have occurred when it occurs within the codes. It also explains that at which point the error has occurred. For example, most of the developers or such input errors are making some kind of typing mistake of the errors within the code happen when the developers or such input errors are making some kind of typing mistake.
Some of the basic reasons that why the exception errors occur:
- Whenever we try to divide any of the numbers by 0. This leads to infinity, and in results, the exceptions are shown.
- When we try to call any files that don’t exist within our system.
- When the input provided by the user is wrong.
- When we have a bad network connection.
If the program developer someone cannot manage the failure within the code or the program, then it will be useless for him to make it a successful one. However, like the whole code is correct, the entire code becomes useless due to a silly mistake.
- Syntax Errors
- Runtime errors
- Logical errors
errors of the Spelling
when some characters are missing at the end of the statement.
The indentation is being misused.
Such errors occur at the time of running the code. These errors are only identified when we run the code within the platform. When such kind of errors occurs, it leads to the exception. So such kinds of errors are being then handled by the handlers of the exception.
Such errors occur when:
the data which the program is trying to call is not present in the system.
Therefore, the data that we are using is an invalid type.
These errors don’t lead to any kind of exception. These are the ones in which the programmers don’t get the intended results. These are the type of errors that are not identified quickly. These can only be determined by the testing known as the thorough test.
The objects within the errors
Whenever such errors arise, this leads to an error in the execution. This stops the code from running and shows an object of the error.
The object error has two types of properties:
name: It gives the error name.
Message: the message for the error is returned to the form of the message.
- Syntax Error
Now, as we have some idea about the exception, we will be looking at the methods to stop them from crashing our code.
The Key terms
This statement, known as the try-catch-finally, is a code responsible for handling the exceptions.
Here the try is a clause that runs the program that in return generates the exception.
Let’s have a look at an example: