Dr Heinz M. Kabutz – Mastering Threads

Description

Dr Heinz M. Kabutz – Mastering Threads

Let’s write a ThreadPool together. First exercise. A sea of scared faces. Is the teacher kidding?

“Mastering Threads” is an intense one day course that s with the basics of threads. We then look at laws that help us to write correct threaded code. We then go to higher-level constructs that make threading much easier to use. We ends with diagnosing race conditions and deadlocks.

Each section ends with exercises that you can solve to hone your skills as a Java programmers. Some of these exercises (write a ThreadPool) has challenged hundreds of Java programmers. In solving these, we learn how inter-thread communication works. We learn how to keep our classes thread-safe. We also learn about thread states.

We have a detailed walkthrough for each exercise. Furthermore, students can submit their solved exercises to [email protected] for marking. This helps in the learning aspect as they get feedback from the instructor.

We use OpenJDK 11 for this course, taking full advantage of the new var syntax. However, programmers with Java 6 or 7 knowledge will also be able to follow.

We are selective on what we cover in this. Our intention was to create a short course that will teach you enough to help you in your every day work. Job interview questions on concurrency should not be hard after this. “Mastering Threads” is an introductory course on the topic of concurrency. For a more thorough exposition, please consider “Extreme Java – Concurrency Performance”.

Diese Schulung gibt es auch auf Deutsch.

Your Instructor

Dr Heinz M. Kabutz
Dr Heinz M. Kabutz

Heinz Kabutz is the author of The Java Specialists’ Newsletter, a publication enjoyed by tens of thousands of Java experts in over 145 countries. His book “Dynamic Proxies (in German)” was #1 Bestseller on Amazon.de in Fachbücher für Informatik for about five minutes until Amazon fixed their algorithm. Thanks to a supportive mother, he has now sold 5 copies.

Heinz’s Java Specialists’ newsletter is filled with amusing anecdotes of life on the Island of Crete. He is a popular speaker at all the best Java conferences around the world, and also at some of the worst. He teaches Java courses in classrooms around the world, where his prime objective is to make absolutely sure that none of his students fall asleep. He is not always successful.

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Course Curriculum

1. Mastering Threads

Copyright Notice

1. Mastering Threads (2:47)

1.1. Hearty Welcome (4:30)

Slides

Exercises

2. Basics of Threads

2. Basics of Threads (1:08)

2.1. Why Use Threads? (1:28)

2.2. Threading Models (3:06)

2.3. Parallel Computing (2:13)

2.4. Concurrent Computing (1:53)

2.5. Java Memory Model (JSR 133) (2:17)

2.6. Creating New Thread (1:44)

2.6.1. New Thread with Runnable (0:54)

2.7. ThreadGroups (3:14)

2.7.1. What Can We Do With ThreadGroups? (2:03)

2.8. Shared Memory with Multithreading (4:45)

2.9. Synchronized (9:48)

2.10. Thread States (3:35)

2.11. Inter-thread communication (5:22)

2.12. Priorities (0:53)

2.13. java.util.Timer (0:52)

2.14. Daemon Threads (0:32)

2.X. Exercise 2.1 (2:37)

2.X. Exercise 2.1 Walkthrough (10:16)

2.X. Exercise 2.2 (0:32)

2.X. Exercise 2.2 Walkthrough (2:01)

3. The Secrets of Concurrency

3. The Secrets of Concurrency (1:25)

3.1. Sabotaged Doorbell (8:18)

3.2. Distracted Spearfisherman (9:15)

3.3. Overstocked Haberdashery (9:08)

3.4. Blind Spot (4:14)

3.5. Leaked Memo (4:51)

3.6. Corrupt Politician (1:55)

3.7. Micromanager (3:03)

3.8. Cretan Driving (4:48)

3.9. Sudden Riches (3:21)

3.10. Uneaten Lutefisk (3:48)

3.X Exercise 3.1 (0:57)

3.X Exercise 3.1 Walkthrough (2:16)

3.X Exercise 3.2 (0:33)

3.X Exercise 3.2 Walkthrough (7:01)

3.X Exercise 3.3 (0:24)

3.X Exercise 3.3 Walkthrough (1:20)

4. Applied Threading Techniques

4. Applied Threading Techniques (0:22)

4.1. Executors (0:57)

4.1.1. ExecutorService (2:11)

4.1.2. Callable and Future (1:03)

4.1.3. Executor Example (5:08)

4.2. CompletionService (2:11)

4.3. CountDownLatch (1:47)

4.4. Semaphore (1:49)

4.5. BlockingQueues (1:02)

4.5.1. ArrayBlockingQueue (0:51)

4.5.2. LinkedBlockingQueue (0:39)

4.5.3. PriorityBlockingQueue (0:41)

4.5.4. DelayQueue (0:10)

4.5.5. SynchronousQueue (0:27)

4.6. Unhandled Exceptions (1:30)

4.7. ThreadLocal (1:35)

4.8. Stopping Threads (1:41)

4.9. Shutdown Hooks (2:05)

4.X. Exercise 4.1 (0:24)

4.X. Exercise 4.1 Walkthrough (3:03)

4.X. Exercise 4.2 (0:10)

4.X. Exercise 4.2 Walkthrough (1:54)

4.X. Exercise 4.3 (1:22)

4.X. Exercise 4.3 Walkthrough (1:14)

4.X. Exercise 4.4 (1:02)

4.X. Exercise 4.4 Walkthrough (4:35)

5. Threading Problems

5. Threading Problems (0:30)

5.1. Race Condition (2:33)

5.1.1. Demo of Simple Race Condition (1:37)

5.1.2. Repairing Race Condition with synchronized (3:09)

5.1.3. Repairing Race Condition with Atomics (3:20)

5.1.4. Repairing Race Condition with LongAdder (1:00)

5.1.5. Repairing Race Condition with Local Confinement and Merge (1:13)

5.1.6. Fixed with LongAdder (1:09)

5.1.7. Lazy Initialization Race Conditions (1:24)

5.1.8. How to Detect Race Conditions (0:38)

5.2. Starvation (1:03)

5.2.1. ReadWriteLock Starvation (0:57)

5.2.2. Detecting Thread Starvation (0:35)

5.2.3. Starvation in Thread Dumps (2:55)

5.3. Fairness (2:08)

5.3.1. SynchronousQueue Fairness (4:00)

5.4. Deadlock (1:14)

5.4.1. HappyLocker Example (1:00)

5.4.2. How Can We Find Deadlocks? (0:43)

5.4.3. Analyzing Thread Dumps (0:33)

5.5. Livelock (0:16)

5.5.1. Livelock with wait() and Self-Interrupt (2:04)

5.X. Exercise 5.1 (0:25)

5.X. Exercise 5.1 Walkthrough (10:37)

5.X. Exercise 5.2 (0:54)

5.X. Exercise 5.2 Walkthrough (10:20)

6. Conclusion

6. Conclusion (2:12)

Frequently Asked Questions

How long do I have access to a fully paid course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like – across any and all devices you own. Furthermore, if we move to another platform, we will offer you a free transfer of your account for all the courses that you have purchased.
How many times can I cancel and rejoin a subscription course?
To prevent abuse, we limit the number of times that you can cancel and rejoin our subscription based courses to three times.
What is the difference between a subscription, paying in installments and an outright purchase?
With a subscription, you never own the rights to the material. If your card is declined or you cancel your subscription, you lose access to the course. The money you have paid so far is lost. Paying in installments is a bit better. You pay for 5 or 10 months and then once you have completed your installments you have lifetime access to the course. The safest is an outright purchase, where you pay the entire course in one amount. There is no risk of losing access.

 

Can I pay via PayPal?
Yes, you can for outright purchases, but not for recurring payments such as paying by installments or subscriptions.
Can I get an EU VAT Invoice?
Absolutely. First off, be sure to enter the VAT number in the appropriate field during the payment process. Then contact us for an EU VAT Invoice. Please tell us the receipt number for which you need the invoice.
May I share my login details with my colleagues?
Unfortunately not. The terms of usage are for a single license. Teachable tracks your progress through the curriculum, so you won’t know how much you have watched. We offer a 30% discount on 50 licenses or more by one company. Please contact us for bulk licensing.
May we use the course for running in-house courses?
You may, as long as each of the students in the class has a valid license for that course. For example, some companies run lunch time Design Patterns study groups using our material. This is an effective way to learn. Please contact us for bulk licensing.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund and deregister you from the course.
When does the course and finish?
The course s now and never ends! It is a completely self-paced online course – you decide when you and when you finish. We do recommend putting time aside and setting goals to complete the course.
Can I watch the course offline during my commute?
Teachable have an iOS app that lets you watch offline. Android is not supported unfortunately.

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