How and where do you define your own Exception hierarchy in Java?
My main question concerns package location where your Exception classes must be defined.
Do we create a special package for our exceptions and put all classes inside it?
The hierarchy of Exceptions in the Java programming language begins with the Throwable class – which comes from the Object class and is its direct subclasswhileThe Exception class presents all This Throwable class further branches into two subclasses – Error and Exception.
In order to create a custom exception, we need to extend the Exception class that belongs to java. lang package. Example: We pass the string to the constructor of the superclass- Exception which is obtained using the “getMessage()” function on the object created.
If you want to write a checked exception that is automatically enforced by the Handle or Declare Rule, you need to extend the Exception class. If you want to write a runtime exception, you need to extend the RuntimeException class.
I use this as a general rule.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With