Abstract Class in Java MCQs

Questions

1. A class which is declared with the ________ keyword is known as an abstract class in Java.

2. Abstract class can have constructors and static methods?

3. What is the syntax of abstract class in java?

4. Which of these is not abstract?

5. A method which is declared as abstract and does not have implementation is known as an _____________?

6. Which of these packages contains abstract keyword?

7. An abstract class can have a data member, abstract method, method body (non-abstract method), constructor, and even main() method.

8. Which of these is not a correct statement?

9. What will be output for the folllowing code? abstract class Bank { private abstract void withdraw(); // Line 1 abstract void deposit(); public void balance(){} //Line 2 } class office extends Bank{ // Line 3 void deposit() { // Line 4 // TODO Auto-generated method stub } }

10. What will be output for the folllowing code? abstract class Bank { private String bankName; Bank(String bankName) { this.bankName = bankName; } public String getBankName() { return bankName; } } class office extends Bank { office() { super("Axis Bank"); } public static void main(String[] args) { Bank bank = new office(); System.out.println(bank.getBankName()); } }

Index of Questions