This is the java programming questions and answers section on "Input Output Streams" with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand.
1. Which of these is used to perform all input & output operations in Java?
- A. streams
- B. Variables
- C. classes
- D. Methods
Answer: Option A
Explanation:
Like in any other language, streams are used for input and output operations.
2. What does AWT stands for?
- A. All Window Tools
- B. All Writing Tools
- C. Abstract Window Toolkit
- D. Abstract Writing Toolkit
Answer: Option C
Explanation:
AWT stands for Abstract Window Toolkit, it is used by applets to interact with the user.
3. Which of these is a type of stream in Java?
- A. Integer stream
- B. Short stream
- C. Byte stream
- D. Long stream
Answer: Option C
Explanation:
Java defines only two types of streams – Byte stream and character stream.
4. Which of these classes are used by Byte streams for input and output operation?
- A. InputStream
- B. InputOutputStream
- C. Reader
- D. All of the mentioned
Answer: Option A
Explanation:
Byte stream uses InputStream and OutputStream classes for input and output operation.
5. Which of these classes are used by character streams for input and output operations?
- A. InputStream
- B. Writer
- C. ReadStream
- D. InputOutputStream
Answer: Option B
Explanation:
Character streams uses Writer and Reader classes for input & output operations.
