Given: class UserException extends Exception {} class AgeOutOfLimitException extends UserException {} and the code fragment: class App{ public void doRegister(String name, int age) throws UserException, AgeOutOfLimitException{ if (name.length () < 6){ throw new UserException (); } else if (age >= 60){ throw new AgeOutOfLimitException (); } else { System.out.println("User is registered."); } } public static void main(String[ ] args) throws UserException{ App t = new App (); t.doRegister("Mathew", 60); } } What is the result?
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A. B. C. D.B.
The code defines a class App with a doRegister method that takes in a String parameter name and an int parameter age. The method throws two checked exceptions UserException and AgeOutOfLimitException. The doRegister method checks if the length of the name is less than 6 and if so, it throws a UserException. If the age is greater than or equal to 60, it throws an AgeOutOfLimitException. If neither of these conditions is true, it prints "User is registered."
In the main method, an instance of the App class is created and its doRegister method is called with the parameters "Mathew" and 60. The main method declares that it throws UserException, which means it must either handle the exception or declare that it throws it.
In this case, since the doRegister method throws both UserException and AgeOutOfLimitException, the main method needs to declare that it throws both of these exceptions. However, it only declares that it throws UserException, which means that the code will not compile and a compilation error will occur in the main method.
Therefore, the correct answer is D. A compilation error occurs in the main method.