Q15. An abstract method ____. a. is any method in the abstract class b. cannot b

Question

Q15. An abstract method ____.
   a. is any method in the abstract class
   b. cannot be inherited
   c. has no body
   d. is found in a subclass and overrides methods in a superclass using the reserved word abstract

Q16. An abstract class can define ____.
   a. only abstract methods
   b. only non-abstract methods
   c. abstract and non-abstract methods
   d. only abstract instance variables

Q17. A subclass can directly access protected members of a superclass.
   a. true
   b. false

Q18. If in the heading of a catch block you declare an exception using the class Exception, then that catch block can catch all types of exceptions because the class Exception is the superclass of all exception classes.
   a. true
   b. false

Explanation / Answer

Question 15

An abstract method is a method that is declared without an implementation.

Hence, option c)

Question 16

Option c)

Question 17

Option a)

Question 18

The Throwable class is the superclass of all errors and exceptions in the Java.

Hence, option b)

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