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Advanced Java Quiz (Day 15-30)
Question 1
Which method of a Servlet is called only once?
- A
service()
- B
doGet()
- C
init()
- D
destroy()
Question 2
Which of the following is an example of a terminal operation in Java Streams?
- A
map()
- B
filter()
- C
collect()
- D
sorted()
Question 3
Which of the following statements about JDBC exception handling is true?
- A
ClassNotFoundException occurs when the SQL query syntax is incorrect
- B
SQLTimeoutException occurs when a query execution exceeds the defined time limit
- C
SQLException is an unchecked exception
- D
JDBC resources cannot be closed automatically using try-with-resources
Question 4
What will ${user.name} output in JSP EL?
- A
Calls getter method of name property in user bean
- B
Directly accesses private field name
- C
Prints ${user.name} as plain text
- D
Throws compilation error
Question 5
Which JSTL core tag is used for iteration?
- A
- B
- C
- D
Question 6
Which is the first phase in JSP lifecycle?
- A
Compilation
- B
Translation
- C
Initialization
- D
Execution
Question 7
Which advantage does PreparedStatement have over Statement?
- A
Easier debugging
- B
Faster compilation
- C
Precompiled SQL and protection against SQL Injection
- D
Returns multiple ResultSets
Question 8
What is the first step to connect Java with a database using JDBC?
- A
Create Statement
- B
Register JDBC Driver
- C
Execute Query
- D
Open ResultSet
Question 9
Which method retrieves a session in Servlets?
- A
request.getSession()
- B
response.getSession()
- C
Session.getCurrent()
- D
request.createSession()
Question 10
Which statement is correct?
- A
doGet sends data in body, doPost in URL
- B
doGet is limited in length, doPost supports large data
- C
Both are same
- D
doPost is idempotent
There are 20 questions to complete.