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Career in education is one of the most important and difficult ones. But at the same time teachers around the world are overworked and underpaid. There are many factors that affect teachers’ income. In this...
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The story about the JavaScript language is quite interesting. For those who are not aware, below are some highlights of the popular multi-paradigm language:
Brendan Eich (@BrendanEich) a programmer at Netscape Communications Corporation created Mocha in just 10 days in 1995.
In this article, we are going to study what is a static class in Java and how we can create it. Later, we will discuss some implementation considerations and benefits of using a static class.
Before starting our tutorial on the static class, we first want to briefly remind you that "What is static?", Static is a keyword that can be used with class, variable, method, and block to create static members. Static members belong to the class instead of a specific instance, this means if you make a member static, .you can access it without an object.
In this article, we'll define the typical steps for creating an immutable class in Java and then implement it.
Steps to create Immutable class in java
The generation of classes at runtime is an advanced topic that requires a lot of knowledge that can be reduced if you use particular libraries that perform the most complex functions to accomplish this task.
So, for this purpose, we can use the ClassFactory component and the sources generating components of the Burningwave Core library. Once the sources have been set in UnitSourceGenerator objects, they must be passed to loadOrBuildAndDefine method of ClassFactory with the ClassLoader where you want to define newly generated classes.
This method performs the following operations: tries to load all the classes present in the UnitSourceGenerator through the class loader, if at least one of these is not found it proceeds to compile all the UnitSourceGenerators and uploading their classes on class loader: in this case, keep in mind that if a class with the same name was previously loaded by the class loader, the compiled class will not be uploaded.
Java.util.concurrent.atomic.AtomicReference is a class designed to update variables in a thread-safe way. Why do we need the class AtomicReference? Why can we not simply use a volatile variable? And how can we use it correctly?
For the tool I am writing, I need to detect if an object was called from multiple threads. I use the following immutable class for this:
Enums are great for storing constants, but they lack strong-typing because you can't create an instance of them. I want the best of both worlds. I want my switch statements to work off constants like enums. I want to pass these constants in a strongly-typed container.
While switch statements are often seen as a code smell, there are still plenty of situations where they make sense. Other enum alternatives have been posted by Steve Smith (Ardalis) and Jimmy Bogard (Los Techies) that are coming to a similar solution.
Hello, readers, and welcome to yet another blog in the Java Concurrency series. Today, we are going to look at the CountDownLatch class in Java, what it is, and how to use it. So, let's dive straight into it.
Sometimes, we have a need to start our application only when a particular set of tasks are complete. These tasks might be running in parallel and getting completed together or at different times. Then, how do we tell our other threads that all the tasks are completed? How do we keep track of which tasks are complete and which are not? CountDownLatch is a class just for that.
Running a Java class (not a jar) as a subprocess is something I needed to do this week. More precisely, I wanted to spawn a new process from within a test, instead of running it inside the test directly (in-process). I don’t think this is anything fancy or a complex thing to do. But, this is not something I have ever needed to do before and didn’t know the exact code to write.
Luckily, a quick Google search and a few Stack Overflow posts later, I found the answer I needed. Although the answer is there, I am rewriting it here for my own benefit and as well as yours.
Developers starting with the Spring Framework often get confused with the terminology, specifically dependencies, dependency injection, and Inversion of Control. In this article, we introduce you to the concept of Inversion of Control.
Have a look at the following implementation of ComplexAlgorithmImpl:
The post "Compact Number Formatting Comes to JDK 12" demonstrated the support added to NumberFormatin JDK 12 to support compact number formatting. The examples shown in that post only used the instances of NumberFormat returned by invocations of NumberFormat's new overloaded getCompactNumberInstance(-)methods, and so, therefore, they did not specify characteristics such as minimum fractional digits and maximum fractional digits. The results, in some cases, are less than desirable. Fortunately, NumberFormat does allow for minimum and maximum fractional digits to be specified, and this post demonstrates how that can improve the output of the compact number formatting available with JDK 12.
The code listing introduced in the original "Compact Number Formatting Comes to JDK 12" post (which is available on GitHub) has been updated to demonstrate the use of NumberFormat.setMinimumFractionDigits(int). An excerpt of that code is shown next and is followed by the accompanying output.