How do you manually throw an exception?

How do you manually throw an exception?

• A. throw new ExceptionType(...)
• B. raise ExceptionType(...)
• C. throw ExceptionType(...)
• D. new ExceptionType(...)

Answer: (A)

Throwing an exception manually means signaling an error by creating an exception object and handing control to the runtime’s error handler. In languages like Java and C#, you do this with the throw keyword followed by a new instance of the exception type. For example, throw new SomeException("message"); This pattern is necessary because the throw statement is what transfers control to the appropriate catch block. Simply creating the exception object (new SomeException(...)) constructs the object but does not trigger the exception mechanism, so the program would continue running as if nothing happened. The other forms don’t fit in these languages: using raise is Python syntax, not used in Java/C#. And using just new SomeException(...) creates the exception without raising it, so no exception flow is initiated.

Throwing an exception manually means signaling an error by creating an exception object and handing control to the runtime’s error handler. In languages like Java and C#, you do this with the throw keyword followed by a new instance of the exception type. For example, throw new SomeException("message"); This pattern is necessary because the throw statement is what transfers control to the appropriate catch block. Simply creating the exception object (new SomeException(...)) constructs the object but does not trigger the exception mechanism, so the program would continue running as if nothing happened.

The other forms don’t fit in these languages: using raise is Python syntax, not used in Java/C#. And using just new SomeException(...) creates the exception without raising it, so no exception flow is initiated.