Web Design and Development MCQs with Answers
Practice important Web Design and Development MCQs with answers and explanations.
Multiple Choice Questions
Q241: What does a ResultSet contain in Java?
- A: A database connection
- B: A table schema
- C: The results of a SQL query
- D: A SQL query
View Answer
C
Q242: How does a default ResultSet object behave?
- A: It is updatable and scrollable
- B: It is forward-only and not updatable
- C: It is read-only and scrollable
- D: It can be updated but not scrolled
View Answer
B
Q243: Which method is used to move the cursor to the next row in a ResultSet?
- A: getRow()
- B: moveToInsertRow()
- C: previous()
- D: next()
View Answer
D
Q244: The _______ method must be implemented by all threads.
- A: wait()
- B: start()
- C: stop()
- D: run()
View Answer
D
Q245: What does the next() method of ResultSet return?
- A: The current row number
- B: A boolean indicating if there is a next row
- C: The data in the current row
- D: The previous row's data
View Answer
B
Q246: What is the purpose of the close() method in ResultSet?
- A: To release JDBC and database resources
- B: To retrieve data from the ResultSet
- C: To update the ResultSet
- D: To move the cursor to the previous row
View Answer
A
Q247: What does the absolute(int row) method do in a ResultSet?
- A: Moves the cursor to the specified row number
- B: Moves the cursor to the previous row
- C: Moves the cursor to the first row
- D: Moves the cursor to the last row
View Answer
A
Q248: Which of these can be used to identify a thread?
- A: Thread Id
- B: Thread Name
- C: Thread Priority
- D: All of the above
View Answer
D
Q249: Which of these can be used to serialize an object?
- A: FileOutputStream
- B: ObjectOutputStream
- C: ObjectInputStream
- D: FileInputStream
View Answer
B
Q250: Which of these is a correct statement about a thread?
- A: start() method waits until run() method finishes
- B: run() method waits until start() method finishes
- C: start() method creates a new thread and calls code written inside run() method
- D: start() method returns the result to run() method
View Answer
C