Programming In Java Week 1 NPTEL Assignment Answers 2025

NPTEL Programming In Java Week 1 Assignment Answers 2024

1. What is the primary focus of Java programming?
a. Low-level optimizations
b. Hardware-specific operations
c. Platform independence
d. Assembly language programming

Answer :- c

Explanation: Java is designed to be platform-independent using the concept of “Write Once, Run Anywhere,” meaning compiled Java code can run on any device that has the Java Virtual Machine (JVM).

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2. Which of the following programming principles is a key aspect of Java?
a. Code obfuscation
b. Platform dependence
c. Object-oriented programming
d. Global variables

Answer :- c

Explanation: Java follows the Object-Oriented Programming (OOP) paradigm, which focuses on objects and classes for building modular and reusable code.

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3. What is the last step in the Java programming process?
a. Java Program Execution
b. Java Program Editing
c. Java Program Compilation
d. C/C++ versus Java

Answer :- a

Explanation: The final step is program execution where the compiled bytecode is run by the Java Virtual Machine.

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4. Which of the following is NOT a Java programming tool?
a. Eclipse
b. NetBeans
c. IntelliJ IDEA
d. GCC

Answer :- d

Explanation: GCC is a compiler for C/C++ languages, not a Java IDE. Eclipse, NetBeans, and IntelliJ IDEA are popular tools for Java development.

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5. What does the term “Write Once, Run Anywhere” (WORA) imply in Java?
a. Code reusability
b. Platform independence
c. Cross-compilation
d. Dynamic typing

Answer :- b

Explanation: WORA means once the Java code is written and compiled, it can run on any platform that supports JVM, making it platform-independent.

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6. In Java, what is used to store multiple values of the same type?
a. Structures
b. Pointers
c. Arrays
d. Lists

Answer :- c

Explanation: Arrays in Java are used to store multiple values of the same data type in a single variable.

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7. Which of the following is a valid identifier in Java?
a. 123identifier
b. _identifier
c. #identifier
d. identifier-123

Answer :- b

Explanation: Identifiers in Java cannot begin with a digit, contain special symbols like # or -, but they can begin with an underscore (_).

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8. What is the purpose of Java Language Subset?
a. To limit the capabilities of Java
b. To make Java code compatible with other languages
c. To define a smaller set of Java features for specific purposes
d. To enhance the performance of Java programs

Answer :- c

Explanation: The Java Language Subset defines a reduced set of Java features suitable for constrained environments like embedded systems.

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9. What is the primary purpose of the Java Virtual Machine (JVM) in the Java programming language?
a. Code optimization
b. Platform independence
c. Memory management
d. Hardware-specific operations

Answer :- b

Explanation: JVM allows Java bytecode to be executed on any platform, ensuring platform independence which is a core Java feature.

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10. What is emphasized during the Java Program Editing phase?
a. Writing platform-specific code
b. Debugging the program
c. Compiling the program
d. Writing and modifying the source code

Answer :- d

Explanation: The editing phase involves writing and modifying the source code in a text editor or IDE before compiling.