Review Questions

10.4 Which of the following are wrapper classes?

Select the three correct answers.

  1. java.lang.Void

  2. java.lang.Int

  3. java.lang.Boolean

  4. java.lang.Long

  5. java.lang.String

10.5 Which of the following classes do not extend the java.lang.Number class?

Select the two correct answers.

  1. java.lang.Float

  2. java.lang.Byte

  3. java.lang.Character

  4. java.lang.Boolean

  5. java.lang.Short

10.6 Which of these classes define immutable objects?

Select the three correct answers.

  1. Character

  2. Byte

  3. Thread

  4. Short

  5. Object

10.7 Which of these classes have a one-parameter constructor taking a string?

Select the two correct answers.

  1. Void

  2. Integer

  3. Boolean

  4. Character

  5. Object

10.8 Which of the wrapper classes ...

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