Programming In Java Week 6 NPTEL Assignment Answers 2025

NPTEL Programming In Java Week 6 Assignment Answers 2024

Q1. What is the output of the following program?
a. “Programming In Java”
b. Run time error
c. Compile time error
d. ArithmeticException

Answer: c

Explanation: The program contains a compile-time error, possibly due to a syntax issue or invalid operation caught by the compiler before execution.

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Q2. What is the output of the following program?
a. 1 3
b. 1 2 3 4
c. Runtime error
d. 1 2

Answer: a

Explanation: The logic of the program ensures only 1 and 3 are printed, skipping or breaking on other numbers. Often due to loop conditions or control statements like continue.

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Q3. For the program given below, what will be the output after its execution?
a. 0
b. true
c. 1
d. false

Answer: c

Explanation: The variable being printed is likely an integer and is set or incremented to 1 within the code logic.

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Q4. Which of the following is a correct constructor for a thread object?
a. Thread(Runnable a, String str);
b. Thread(Runnable a, int priority);
c. Thread(Runnable a, ThreadGroup t);
d. Thread(int priority);

Answer: a

Explanation: The constructor Thread(Runnable a, String str) creates a thread with a target Runnable and a name, which is valid in Java.

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Q5. What is the output of the following program?
a. Compiler Error
b. “Running”
c. Runtime Exception
d. No output, but no error

Answer: b

Explanation: The code likely prints the string "Running" from within a valid method, possibly run().

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Q6. How many threads does the following program run on?
a. 0
b. 1
c. 2
d. 3

Answer: c

Explanation: One is the main thread and another thread is explicitly started in the code, totaling two threads.

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Q7. In the following java program, what is the NAME of the thread?
a. thread
b. main
c. system
d. None of the above

Answer: b

Explanation: By default, the name of the initial thread executing a Java program is "main".

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Q8. Which of the following line(s) of code is suitable to START a thread at #1?
a. Thread t = new Thread(Nptel);
b. Thread t = new Thread(Nptel);
  t.start();
c. Nptel run = new Nptel();
  Thread t = new Thread(run);
  t.start();
d. Thread t = new Thread();
  Nptel.run();

Answer: c

Explanation: You need to create an instance of a class that implements Runnable, pass it to a Thread, and then call start() to begin execution.

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Q9. What is the name of the priority of this Thread in this program?
a. 1
b. 4
c. 0
d. 5

Answer: d

Explanation: The default priority of a thread in Java is 5.

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Q10. What does I/O stand for in Java?
a. Input/Output
b. Inheritance/Overriding
c. Integer/Object
d. Iteration/Observation

Answer: a

Explanation: I/O stands for Input/Output in Java, referring to data read/write operations like using System.in, System.out, or file streams.