Explain Runnable vs Callable and thread-safe Singleton

Q: Explain Runnable vs Callable and thread-safe Singleton

This question evaluates a candidate's knowledge of Java concurrency and design patterns, specifically distinctions between Runnable and Callable, mechanisms for result retrieval and exception handling, and the principles underlying thread-safe Singleton implementations.

Q: How do I approach Software Engineering Fundamentals interview questions?

Software Engineering Fundamentals questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master software engineering fundamentals interviews.

Question

Loading...

Concurrency & Design Patterns (Java)

In Java concurrency, what is the difference between Runnable and Callable ?
- When would you choose one over the other?
- How do you retrieve results and handle exceptions for each?
Name one or two design patterns you have used in real projects.
For the Singleton pattern, explain what it means for a Singleton to be thread-safe .
- Why can a naïve lazy Singleton be unsafe under concurrency?
- Describe at least one correct way to implement a thread-safe Singleton in Java and why it works.

Explain Runnable vs Callable and thread-safe Singleton

Quick Overview

Concurrency & Design Patterns (Java)

Solution

Comments (0)