This is your starting point if you are a beginner with JPA. Read on how to effectively utilize JPQL to fetch data and fill your gaps about the various features supported.
#Java #jpa #hibernate #sql #junior
https://www.thoughts-on-java.org/jpql/

Analyze your heapdumps online with this amazing tool! It will help you discover memory leaks, regressions in memory usage and it also provides tips to reduce the overall memory usage. It is totally free so just give it a try!
#java #android #tools #middle #senior
http://heaphero.io/index.jsp

Take your very first steps with machine learning with Deeplearning4j - a modern and powerful tool for machine learning even if you do not have the fundamentals for a well-grounded ML engineer.
#java #ml
http://www.baeldung.com/deeplearning4j

This detailed and expansive post on Kubernetes will give you plenty of information about the features that have made it the most popular container orchestrator.
#kubernetes #architecture #junior #middle
https://dzone.com/articles/a-beginners-guide-to-kubernetes

When we want to copy an object in Java, there are two possibilities that we need to consider - a shallow copy and a deep copy. You will see a comparison between these two approaches and learn four methods to implement the deep copy.
#java #junior
http://www.baeldung.com/java-deep-copy

We are continuing with Spring Cloud Contract - this time focusing on support for Pact and especially the ability to connect to a Pact broker. The Pact broker acts as a repository for sharing the Pact contracts and verification results.
#spring #architecture #middle
https://ordina-jworks.github.io/spring/2018/04/28/Spring-Cloud-Contract-meet-Pact.html

New releases from the last week:
IntelliJ IDEA 2018.2 EAP3: Advanced Contract Annotations and More
https://blog.jetbrains.com/idea/2018/05/intellij-idea-2018-2-eap3-advanced-contract-annotations-and-more/
Gradle Releases Version 4.7 with Support for Java 10
https://www.infoq.com/news/2018/05/gradle-releases-version-4.7
Lombok 1.18.0
https://projectlombok.org/changelog
#releases #ide #gradle #lombok

Oracle's change to a six-month release cadence can make it difficult to keep up with the current state of Java, but this comprehensive guide will help you catch up and prepare for the future with updates on Java 9 and 10 releases, what’s new with Java EE, and an exploration into null-safety in Kotlin and Java.
#java #news #magazine
https://dzone.com/guides/java-features-improvements-amp-updates?oid=18jsfb

It is quite easy to find articles about “how to create gradle custom tasks”, “how to structure gradle build files” etc. But not very common to find articles about how Gradle really works under the hood. In this article, the author focuses on a small part of the “dark side” of Gradle: the build lifecycle.
#gradle #junior #middle
https://proandroiddev.com/understanding-gradle-the-build-lifecycle-5118c1da613f

This article presents a way to structure a Spring Boot application in vertical modules and horizontal layers and shows you how to test the verticals and layers with the testing features provided by Spring Boot.
#java #testing #spring #springboot #junior #middle #senior
https://reflectoring.io/testing-verticals-and-layers-spring-boot/

Kotlin is popular, Kotlin is trendy. Kotlin gives you compile-time null-safety and less boilerplate. But is Kotlin better than Java? Check this interesting story of a project being written twice with a lot of evident examples and consider keeping them in mind.
#java #kotlin #middle
https://allegro.tech/2018/05/From-Java-to-Kotlin-and-Back-Again.html

Java EE 8 has been released and its release includes a significant amount of changes relevant to server-side Java developers. Take a look at the new tools that came with it, see how the transition to Jakarta EE is going, and what the future of enterprise Java holds for you.
#java #middle #senior
https://dzone.com/articles/java-ee-8-and-the-open-future-of-java-ee

If you are tired of all these beautiful patterns and best practices and you want to write something insane - read this one. Maybe you like horror stories but in code - this may appeal to you!
#java #forfun
https://www.e4developer.com/2018/05/13/how-to-write-horrible-java/

Collections have seen a lot of changes in the past couple of JDKs. Let's look at how they've improved in Java 9 and Java 10 and what the new ways of creating immutable ones are.
#java #java9 #java10 #collections #junior #middle
https://dzone.com/articles/java-collections-are-evolving

Together with the growing popularity of microservices and light-weight REST API, we are witnessing another trend in Java: the rise of Java Microframeworks. Javalin, Micronaut, Spark and many more make building REST APIs a breeze. In this article, the author looks at this exciting space and shares his opinions on their use.
#java
https://www.e4developer.com/2018/06/02/the-rise-of-java-microframeworks/

We all know that it is very hard to build that perfect endpoint that satisfies all clients needs. In this blog post it is explained how you can add GraphQL to your existing JAX-RS application, without too much effort.
#graphql #wildfly
https://www.javacodegeeks.com/2018/05/graphql-on-wildfly-swarm.html

New releases from the last week:
Elasticsearch 6.3.0 Released
#releases
https://www.elastic.co/blog/elasticsearch-6-3-0-released

The return type of a method can influence your code a lot. It is a valuable piece of information for your API, makes it easier to test a functionality and should be considered adequately every time.
#java #middle
https://www.javacodegeeks.com/2018/05/void-methods-as-behavior-black-holes.html

Are you wondering what to read to improve your knowledge of Java or become a better Java developer? In this article you can get familiar with the greatest Java books that have withstood the test of time.
#java #junior #middle
https://dzone.com/articles/10-all-time-great-books-for-java-programmers-best

Java 11 will soon be upon us in a few months. Let's take a look at some of the upcoming API Methods. Additionally you can check which methods have been removed from Thread class in JDK 11.
#java #java11
https://dzone.com/articles/api-updates-in-java-se-11-189