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CSE MCQs :: JAVA MCQs

  1. Which of these packages contain classes and interfaces used for input & output operations of a program?
  2. A.
    java.util
    B.
    java.lang
    C.
    java.io
    D.
    All of the mentioned

  3. Which of these class is not a member class of java.io package?
  4. A.
    String
    B.
    StringReader
    C.
    Writer
    D.
    File

  5. Which of these interface is not a member of java.io package?
  6. A.
    DataInput
    B.
    ObjectInput
    C.
    ObjectFilter
    D.
    FileFilter

  7. Which of these class is not related to input and output stream in terms of functioning?
  8. A.
    File
    B.
    Writer
    C.
    InputStream
    D.
    Reader

  9. Which of these is specified by a File object?
  10. A.
    a file in disk
    B.
    directory path
    C.
    directory in disk
    D.
    None of the mentioned

  11. Which of these is method for testing whether the specified element is a file or a directory?
  12. A.
    IsFile()
    B.
    isFile()
    C.
    Isfile()
    D.
    isfile()

  13. Which of these classes is used for input and output operation when working with bytes?
  14. A.
    InputStream
    B.
    Reader
    C.
    Writer
    D.
    All of the mentioned

  15. Which of these class is used to read and write bytes in a file?
  16. A.
    FileReader
    B.
    FileWriter
    C.
    FileInputStream
    D.
    InputStreamReader

  17. Which of these method of InputStream is used to read integer representation of next available byte input?
  18. A.
    read()
    B.
    scanf()
    C.
    get()
    D.
    getInteger()

  19. Which of these data type is returned by every method of OutputStream?
  20. A.
    int
    B.
    float
    C.
    byte
    D.
    None of the mentioned