Java Objective Questions Answers -Chapter 1

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

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

  Answer And Explanation

  Answer: Option B

  Explanation:

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• 9. Which of the following below are valid isolation levels in J2EE

  1. TRANSACTION_READ_UNCOMMITTED
  2. TRANSACTION_SERIALIZABLE
  3. Only A
  4. Both A and B

  Answer And Explanation

  Answer: Option D

  Explanation:

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

  1. True
  2. False

  Answer And Explanation

  Answer: Option A

  Explanation:

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• 11. Which metrhods are utilized to control the access to an object in multi threaded programming

  1. Asynchronized methods
  2. Synchronized methods
  3. Serialized methods
  4. None of above

  Answer And Explanation

  Answer: Option B

  Explanation:

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• 12. In Runnable, many threads share the same object instance

  1. True
  2. False

  Answer And Explanation

  Answer: Option A

  Explanation:

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• 13. Java beans have no types

  1. True
  2. False

  Answer And Explanation

  Answer: Option A

  Explanation:

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• 14. Program which executes applet is known as
  

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

  Answer And Explanation

  Answer: Option A

  Explanation:

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