JetBrains loves all programming languages, and developers of all types! This May, Java turns 25 years old! So we want to pay it special attention, and celebrate 25 things we love about Java and the JVM.

The release of Java SE 15 in Sept 2020 will introduce “sealed classes” (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may extend it. Sealed classes, like enums, capture alternative…

Data is laid out in memory as closely as possible on an integer array. Map and Doubly Linked List are not two different data structures anymore. A custom map implementation allows built-in doubly linked list functionality on key-value and left-right data …

A Uniform Manifold Approximation and Projection (UMAP) library for Java, developed by Tag.bio in collaboration with Real Time Genomics. – tag-bio/umap-java…

The release of Java SE 15 in Sept 2020 will introduce “sealed classes” (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may extend it. Sealed classes, like enums, capture alternative…

What is a HashSet A HashSet is an unordered collection containing unique elements. It has the standard collection operations Add, Remove, Contains, but since it uses a hash-based implementation, these operations are O(1) Learn with a Programming Question …

It’s been a little over a year since I started developing in Java full-time again. A retrospective is overdue! Workplace takeaways Communication. This may not seem like a Java-related skill, but I cannot overstate how many times stopping to ask questions,…

When it comes to code compilation and execution, not all programming languages follow the same approach. One of the common although not ideal ways to differentiate them is to split them into 2 groups compiled and interpreted languages.

Using Java reflection and annotations to wire up components.