The only guide you’ll need on concurrency & multithreading for senior engineers. Pressure test your skills with real-world practice problems from top companies.

Concurrency in Java is one of the most complex and advanced topics brought up during senior engineering interviews. Knowledge of concurrency and multithreading can put interviewees at a considerable advantage. This course lays the foundations of advanced concurrency and multithreading and explains concepts such as Monitors and Deferred Callbacks in depth. It also builds simple and complete solutions to popular concurrency problems that can be asked about in interviews like the Reader-Writer Problem and the Dining Philosopher Problem. While prior knowledge of concurrency is not required to follow through with this course, familiarity with the very basics of concurrency would be helpful.

Java Multithreading for Senior Engineering Interviews

## Explanation

Java's semaphore can be <code class="mthd">release()-ed</code> or <code class="mthd">acquire()-d</code> for signalling amongst threads. However the important call out when using semaphores is to make sure **that the permits acquired should equal permits returned**. Take a look at the following example, where a runtime exception causes a deadlock.

# Explanation

Java's semaphore can be <code class="mthd">release()-ed</code> or <code class="mthd">acquire()-d</code> for signalling amongst threads. However the important call out when using semaphores is to make sure **that the permits acquired should equal permits returned**. Take a look at the following example, where a runtime exception causes a deadlock.

# Explanation

Java's semaphore can be <code>release()-ed</code> or <code>acquire()-d</code> for signalling amongst threads. However the important call out when using semaphores is to make sure **that the permits acquired should equal permits returned**. Take a look at the following example, where a runtime exception causes a deadlock.

The Basics

Multithreading in Java

Java's Memory Model

Interview Practice Problems

Bonus Questions

Beyond the Interview

Java Concurrency Reference

Revision & Quizzes

Semaphore in Java

Explanation