Input Output -Java Programming MCQ Questions and Answers

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Current Affairs Interview Blog

Which class is used to write binary data to a file in Java?

A) `InputStream` B) `BufferedReader` C) `FileOutputStream` D) `FileReader`

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Answer & Solution

Answer: Option C

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In Java, which method is used to write binary data to a file?

A) `read()` B) `print()` C) `scan()` D) `write()`

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Answer & Solution

Answer: Option D

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What is the purpose of the `FileWriter` class in Java?

A) It is used to write character data to a file B) It is used to read character data from a file C) It is used to write binary data to a file D) It is used to read binary data from a file

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Answer & Solution

Answer: Option A

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Which class is used to write formatted text to a file in Java?

A) `OutputStream` B) `BufferedWriter` C) `Scanner` D) `PrintWriter`

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Answer & Solution

Answer: Option D

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In Java, what is the primary purpose of the `DataInputStream` class?

A) It is used to read text data from a file B) It is used to write binary data to a file C) It is used to read primitive data types from an input stream D) It is used to perform mathematical operations

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Answer & Solution

Answer: Option C

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In Java, what does the `DataOutputStream` class do?

A) It is used to read binary data from a file B) It is used to write primitive data types to an output stream C) It is used to read data from the keyboard D) It is used to read & write binary data from a text file

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Answer & Solution

Answer: Option B

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Which class is used to write primitive data types to an output stream in Java?

A) `FileReader` B) `FileWriter` C) `DataOutputStream` D) `DataInputStream`

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Answer & Solution

Answer: Option C

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What is the purpose of the `RandomAccessFile` class in Java?

A) It is used to read data from the keyboard B) It is used to write data to a file C) It is used to perform mathematical operations D) It allows reading and writing at random positions in a file

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Answer & Solution

Answer: Option D

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In Java, which class is used to read and write character streams?

A) `Reader` and `Writer` classes B) `InputStream` and `OutputStream` classes C) `BufferedReader` and `PrintWriter` classes D) `DataInputStream` and `DataOutputStream` classes

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Answer & Solution

Answer: Option A

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What is the primary purpose of the `File` class in Java?

A) It is used to perform mathematical operations B) It is used to write data to a file C) It is used to read data from a file D) It represents a file or directory pathname

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Answer & Solution

Answer: Option D

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