This is the java programming questions and answers section on "Serialization" 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 a process of writing the state of an object to a byte stream?
- A. Serialization
- B. Externalization
- C. File Filtering
- D. All of the mentioned
Answer: Option A
Explanation:
Serialization is the process of writing the state of an object to a byte stream. This is used when you want to save the state of your program to persistent storage area.
2. Which of these process occur automatically by java run time system?
- A. Serialization
- B. Garbage collection
- C. File Filtering
- D. All of the mentioned
Answer: Option A
Explanation:
Serialization and deserialization occur automatically by java run time system, Garbage collection also occur automatically but is done by CPU or the operating system not by the java run time system.
3. Which of these is an interface for control over serialization and deserialization?
- A. Serializable
- B. Externalization
- C. FileFilter
- D. ObjectInput
Answer: Option B
Explanation:
Externalization
4. Which of these interface extends DataOutput interface?
- A. Serializable
- B. Externalization
- C. ObjectOutput
- D. ObjectInput
Answer: Option C
Explanation:
ObjectOutput interface extends the DataOutput interface and supports object serialization.
5. Which of these is a method of ObjectOutput interface used to finalize the output state so that any buffers are cleared?
- A. clear()
- B. flush()
- C. fflush()
- D. close()
Answer: Option B
Explanation:
flush()
