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Java Programming Basics

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Questions and Answers

Which feature of Java enables developers to write programs that can perform many tasks simultaneously?

Multithreading (correct)
Robustness
Portability
Security

What is the architecture-neutral feature of Java related to?

Improved security measures
Compiler optimizations
Error handling mechanisms
Cross-platform compatibility (correct)

Which technique in Java is based on public key encryption for security purposes?

Authentication (correct)
Interpreted byte code
Robust error checking
Multithreaded programming

In Java, what design feature allows for the construction of interactive applications that run smoothly?

Inter-thread communication (D) Signup and view all the answers

Which aspect of Java emphasizes compile-time error checking and runtime checking to eliminate errors?

Robustness (D) Signup and view all the answers

What makes Java's compiler portable and suitable for different platforms?

POSIX subset compatibility (C) Signup and view all the answers

What is a Java token?

The smallest unit of a Java program used for constructing expressions and statements (C) Signup and view all the answers

Which of the following is NOT a type of Java token?

Constants (B) Signup and view all the answers

What defines a local variable in Java?

Declared inside a method (A) Signup and view all the answers

What does an instance variable represent in Java?

A variable declared inside a class but outside the method (C) Signup and view all the answers

Which of the following describes synchronization in Java?

Ensures only one thread can access a resource at a time (C) Signup and view all the answers

What is the purpose of locks in Java?

To ensure mutual exclusion and prevent race conditions in multithreaded applications (D) Signup and view all the answers

In Java, when is the do-while loop recommended?

When the loop must execute at least once (B) Signup and view all the answers

What does the Java break statement do?

Break the current flow of the program at a specified condition (C) Signup and view all the answers

When using the Java continue statement, what happens?

Skips the remaining code within the loop at a specified condition (B) Signup and view all the answers

What is an advantage of Java Arrays?

Code optimization (A) Signup and view all the answers

What is a disadvantage of Java Arrays?

Fixed size (D) Signup and view all the answers

When should you use a do-while loop in Java?

When you want to execute the loop at least once (D) Signup and view all the answers

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