Which of the following is true in the case of abstract class

Related MCQs

• Which of the following declares an abstract method in an abstract Java class?
• If a class inheriting an abstract class does not define all of its function then it will be known as?
• Suppose A is an abstract class ,B is a concrete subclass of A, and both A and B have an default constructor. Which of the following is correct? a) A a = new A(); b)A a = new B(); c) B b = new A(); d) B b = new B();
• Which of these keywords are used to define an abstract class?
• Which of these can be used to fully abstract a class from its implementation?
• Which of these keywords are used to define an abstract class?.
• A ____ class may not have any abstract method.
• A class having an abstract method is to be declared as _______.
• Which of the following statements about abstract methods/classes in JAVA is true?
• State true or false (i) JPanel is a class included in awt package (ii) Anonymous classes are mostly used for event handling (iii) Names of anonymous classes must be unique (iv) JOptionPane is an inner class