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Threading Models in Java 1. Introduction Often in our applications, we need to be able to do multiple things at the same time. We can achieve this in several ways, but key amongst them is to implement multitasking in some form. Multi-tasking means running multiple tasks at the same time,… Continue Reading java-threading-models
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Priority-based Job Scheduling in Java 1. Introduction In a multi-threaded environment, sometimes we need to schedule tasks based on custom criteria instead of just the creation time. Let’s see how we can achieve this in Java – using a PriorityBlockingQueue. 2. Overview Let us say we have jobs that we… Continue Reading java-priority-job-schedule
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Runnable vs. Callable in Java 1. Overview Since the early days of Java, multithreading has been a major aspect of the language. Runnable is the core interface provided for representing multi-threaded tasks and Callable is an improved version of Runnable that was added in Java 1.5. In this article, we’ll… Continue Reading java-runnable-callable
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Print Even and Odd Numbers Using 2 Threads 1. Introduction In this tutorial, we’re going to have a look at how we can print even and odd numbers using two threads. The goal is to print the numbers in order, while one thread only prints the even numbers and the other… Continue Reading java-even-odd-numbers-with-2-threads
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Guide To CompletableFuture 1. Introduction This article is a guide to the functionality and use cases of the CompletableFuture class – introduced as a Java 8 Concurrency API improvement. Further reading: Runnable vs. Callable in Java Learn the difference between Runnable and Callable interfaces in Java. Read more → Guide… Continue Reading java-completablefuture
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Java Concurrency Java Concurrency Basics + Overview of the java.util.concurrent + Guide to the Synchronized Keyword in Java + Guide to the Volatile Keyword in Java + Java – Difference Between Wait() and Sleep() + Guide to java.util.concurrent.Future + An Introduction to ThreadLocal in Java + Life Cycle of a… Continue Reading java-concurrency
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A Guide to ConcurrentMap 1. Overview Maps are naturally one of the most widely style of Java collection. And, importantly, HashMap is not a thread-safe implementation, while Hashtable does provide thread-safety by synchronizing operations. Even though Hashtable is thread safe, it is not very efficient. Another fully synchronized Map, Collections.synchronizedMap,… Continue Reading java-concurrent-map
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An Introduction to Synchronized Java Collections 1. Overview The collections framework is a key component of Java. It provides an extensive number of interfaces and implementations, which allows us to create and manipulate different types of collections in a straightforward manner. Although using plain unsynchronized collections is simple overall, it… Continue Reading java-synchronized-collections
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Thread Safe LIFO Data Structure Implementations 1. Introduction In this tutorial, we’ll discuss various options for Thread-safe LIFO Data structure implementations. In the LIFO data structure, elements are inserted and retrieved according to the Last-In-First-Out principle. This means the last inserted element is retrieved first. In computer science, stack is… Continue Reading java-lifo-thread-safe
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Guide to the ConcurrentSkipListMap 1. Overview In this quick article, we’ll be looking at the ConcurrentSkipListMap class from the java.util.concurrent package. This construct allows us to create thread-safe logic in a lock-free way. It’s ideal for problems when we want to make an immutable snapshot of the data while other… Continue Reading java-concurrent-skip-list-map
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