Java Objective Questions Answers -Chapter 1

• 15. Which statement is static and synchronized in JDBC API

  1. executeQuery()
  2. executeUpdate()
  3. getConnection()
  4. prepareCall()

  Answer And Explanation

  Answer: Option C

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• 16. The JDBC-ODBC bridge is

  1. Multithreaded
  2. Singlethreaded
  3. Both of above
  4. None of above

  Answer And Explanation

  Answer: Option A

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• 17. All raw data types should be read and uploaded to the database as an array of

  1. int
  2. char
  3. bollean
  4. byte

  Answer And Explanation

  Answer: Option D

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• 18. The class java.sql.Timestamp is associated with

  1. java.util.Time
  2. java.sql.Time
  3. java.util.Date
  4. None of above

  Answer And Explanation

  Answer: Option C

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• 19. 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 And Explanation

  Answer: Option B

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• 20. The Externizable interface extends the serializable interface

  1. True
  2. False

  Answer And Explanation

  Answer: Option A

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• 21. Converting a primitive type data into its corresponding wrapper class object instance is called

  1. boxing
  2. wrapping
  3. instantiation
  4. autoboxing

  Answer And Explanation

  Answer: Option D

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