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Is it possible to create my own unchecked exception in Java?
Basically, I'd like to
MyUncheckedException throws 
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To create a custom exception, we have to extend the java. lang. Exception class. Note that we also have to provide a constructor that takes a String as the error message and called the parent class constructor.
NET provides a hierarchy of exception classes ultimately derived from the Exception base class. However, if none of the predefined exceptions meet your needs, you can create your own exception classes by deriving from the Exception class.
Steps to create a Custom Exception with an Example CustomException class is the custom exception class this class is extending Exception class. Create one local variable message to store the exception message locally in the class object.
The throw keyword in Java is used for explicitly throwing a single exception. This can be from within a method or any block of code. Both checked and unchecked exceptions can be thrown using the throw keyword.
Yes. Extend MyUncheckedException from RuntimeException. However, below is the guideline from documentation
Generally speaking, do not throw a RuntimeException or create a subclass of RuntimeException simply because you don't want to be bothered with specifying the exceptions your methods can throw.
Here's the bottom line guideline: If a client can reasonably be expected to recover from an exception, make it a checked exception. If a client cannot do anything to recover from the exception, make it an unchecked exception.
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Yes - derive it from RuntimeException
Make sure that you do it for the right reason: as a rule, runtime exceptions indicate programming errors, rather than errors that a program could potentially react to in some meaningful way.
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