Immutable Data Structures in Java
As part of some coding interviews, the topic of immutability sometimes comes up. There seems to be a bit of a misunderstanding on the concept of immutability, where developers often believe that having a ‘final’ reference is enough to make an object immutable. This blogpost dives a bit deeper in immutable references and immutable data structures. Take a look!
#java #immutability #kotlin #scala #junior #middle
https://www.jworks.io/immutable-data-structures-in-java/

Java Garbage Collection Basics
Here in this article, you can learn the basics you need to know about automatic garbage collection in Java. In just two steps - Marking and Deleting - you will learn the process of deallocating memory handled automatically by the garbage collector.
#java #jc #jvm #junuor
https://dzone.com/articles/java-garbage-collection-2

Migrating from Lombok to Kotlin
As a Java developer, one of the most heard complaints about working Java is the verbosity of the language. One of the main areas where this verbosity really shows up is in the area of data classes.
Since this is such a common issue, several solutions have been created, Lombok being to the most well known. In this guide you will see how to seamlessly go from using Lombok to Kotlin instead. Check it out!
#java #lombok #kotlin
https://www.jworks.io/migrating-from-lombok-to-kotlin/

Var and Language Design in Java
Another great article by our colleague Peter Verhas.
The var predefined type introduced in Java 10 lets you declare local variables without specifying the variable type when you assign a value to it. In the following article, you will learn everything you need to know about var in Java as well as what to expect in the future.
#java #middle
https://dzone.com/articles/var-and-language-design-in-java

A Beginner’s Guide to Java Programming Nightmares
New developers make beginner’s mistakes. A way out of these technological nightmares depends on how well you can follow your own coding processes. Here are explored some of the most common Java mistakes and their solutions with a tour of the horrors of the author’s own early code.
#java #junior #middle
https://jaxenter.com/java-programming-nightmares-156749.html

Definitive Guide To Java 12
Java 12 will be released in a few days and here’s everything you need to know about it. Be it switch expressions, the teeing collector, improved start time thanks to the default CDS archive, or better memory usage due to garbage collection improvements – you will see each feature presented as well as migration options.
#java #java12 #middle #senior
https://blog.codefx.org/java/java-12-guide/

Designing Event Driven Services
This is an amazing series of articles on how to deal with consistency in distributed systems, the right way. Don’t miss it.
Part 1: The Data Dichotomy: Rethinking the Way We Treat Data and Services
Part 2: Build Services on a Backbone of Events
Part 3: Using Apache Kafka for Service Architectures
Part 4: Chain Services with Exactly Once Guarantees
Part 5: Messaging as the Single Source of Truth
Part 6: Leveraging the Power of a Database Unbundled
Part 7: Building a Microservices Ecosystem with Kafka Streams and KSQL
#java #architecture #senior

How to Install Multiple Versions of Java on the Same Machine
SDKMan! is a tool for managing parallel versions of multiple Software Development Kits on most Unix-based systems. It provides a convenient Command Line Interface (CLI) and API for installing, switching, removing, and listing Candidates
https://dzone.com/articles/how-to-install-multiple-versions-of-java-on-the-sa
#sdkman #java

JEP Draft: Add Detailed Message to NullPointerException Describing What is Null
Programming errors like NullPointerExceptions would rarely go to production, however, they might be really hard to troubleshoot as by default they don't contain a message.
Take a look at this new JEP trying to address this limitation available for years in the JDK.
https://openjdk.java.net/jeps/8220715
#jep #java

Java 12: Mapping with Switch Expressions
Java 12 comes with “preview” support for “Switch Expressions”. In this article, you will be looking at the new feature and how it can be used in conjunction with some common Stream operations. Jump in to learn how you can make your code even better with Streams and Switch Expressions!
https://www.javacodegeeks.com/2019/03/java-12-mapping-with-switch-expressions.html
#java #java12 #middle #senior