Tag: programming languages

Questions Related to programming languages

Is Prepared statement a precomplied SQL statement?

technology programming languages

  1. True

  2. False

Show answer
Correct Option: A

Which three are true about the HttpServletRequestWrapper class?
technology programming languages

  1. The HttpServletRequestWrapper is an example of the Decorator pattern.

  2. The HttpServletRequestWrapper can be used to extend the functionality of a servlet request.

  3. A subclass of HttpServletRequestWrapper CANNOT modify the behavior of the getReader method.

  4. An HttpServletRequestWrapper may be used only by a class implementing the javax.servlet.Filter interface.

  5. An HttpServletRequestWrapper CANNOT be used on the request passed to the RequestDispatcher.include

  6. An HttpServletRequestWrapper may modify the header of a request within an object implementing the

Show answer
Correct Option: A,B,F

Which arithmetic operations can result in the throwing of anArithmeticException?
technology programming languages

  1. +

  2. *

  3. -

  4. /

Show answer
Correct Option: D

What does getSession(false) will do?

technology programming languages

  1. Create new session if the session does not already exist

  2. Returns null if session does not already exist

  3. Returns false

  4. Destroy the session

Show answer
Correct Option: B

Servlet A receives a request that it forwards to servlet B within another web application in the same web container. Servlet A needs to share data with servlet B and that data must not be visible to other servlets in A's web application. In which object can the data that A shares with B be stored?
technology programming languages

  1. HttpSession

  2. ServletConfig

  3. ServletContext

  4. HttpServletRequest

  5. HttpServletResponse

Show answer
Correct Option: D

What is the difference between an object and an instance?

technology programming languages

  1. No difference, both are the same

  2. An Object maynot have a class definition, but an instance must have a class definition

  3. An Object must have a class definition, but an instance may not have a class definition

  4. Object and Instance should have different class definitions. It can not be the same.

Show answer
Correct Option: B

Is a skeleton created by RMI?
technology programming languages

  1. True

  2. False

Show answer
Correct Option: A

Jdk1.4 also contain the tool interface that is JVMTI which is a profiling tool in jdk1.5
technology programming languages

  1. True

  2. False

Show answer
Correct Option: B

If a method is declared as protected, where may the method be accessed?
technology programming languages

  1. Interfaces of the same package and other packages

  2. Classes of the same package

  3. Classes of the same package and other packages

  4. Interfaces of the same package

Show answer
Correct Option: B,D

A dead thread can be restarted by calling the start() method again on that object
technology programming languages

  1. True

  2. False

Show answer
Correct Option: B