Java Question Bank Objective Q&A

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1. Which class cannot be subclassed (or extended) in java?

1. abstract class
2. parent class
3. Final class
4. None of above

Answer: 3

2. Can we declare abstract static method

1. Yes
2. No

Answer: 2

3. pow () is associated with which class

1. Math class
2. Input stream class
3. Object class
4. None of above

Answer: 1

4. Program which executes applet is known as

1. applet engine
2. virtual machine
3. JVM
4. None of above

Answer: 1

5. Suspend thread can be revived by using

1. start() method
2. Suspend() method
3. resume() method
4. yield() method

Answer: 3

6. Runnable is

1. Class
2. Method
3. Variable
4. Interface

Answer: 4

7. Which collection class associates values witch keys, and orders the keys according to their natural order

1. java.util.HashSet
2. java.util.LinkedList
3. java.util.TreeMap
4. java.util.SortedSet

Answer: 3

8. Which method is used to perform DML statements in JDBC

1. execute()
2. executeUpdate()
3. executeQuery()
4. None of above

Answer: 2

9. Which of the following statements about arrays is syntactically wrong

1. arrayName[] p = new arrayName[5];
2. arrayName p[5];
3. arrayName[] p [];
4. arrayName p[][] = new arrayName[2][];

Answer: 2

10. Session beans are created by the client submitting the query to the database

1. True
2. False

Answer: 1

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