Java

Have you ever wanted to develop an “express” version of your database application? In this Hands-On Lab article, you will learn a truly easy and straightforward method. The entire Java domain model will be automatically generated for you. You just connect to your existing database and then start developing using Java streams. You will be able to create, for example, ...

Is it possible to turn joined database tables into a Java Stream? The answer is yes. Since we got this question so many times, we decided to throw in another hands-on-lab article explaining how to perform more advanced Stream Joins. So here you are, the fifth article out of six, complemented by a GitHub repository containing instructions and exercises to ...

Today’s Mark Reinhold post “JEPs proposed to target JDK 14: 305, 343, 359, 366, & 368” proposes targeting five more JEPs to JDK 14. Some highly anticipated features are among this group, although all but one are proposed to be in “preview” or “incubating”: JEP 305: Pattern Matching for instanceof (Preview)JEP 343: Packaging Tool (Incubator)JEP 359: Records (Preview)JEP 366: Deprecate ...

JDK 14 Early Access Build #23 (2019/11/13) is now available. One of the more noteworthy changes with this build is the removal of the Concurrent Mark Sweep garbage collector. JEP 291 [“Deprecate the Concurrent Mark Sweep (CMS) Garbage Collector”] deprecated the Concurrent Mark Sweep (CMS) garbage collector back in 2017 with JDK 9 and JEP 363 [“Remove the Concurrent Mark ...

jstat is a simple utility tool, that is present in JDK to provide JVM performance-related statistics like garbage collection, compilation activities. The major strength of jstat is its ability to capture these metrics dynamically when JVM is running without any pre-requisite instrumentation. What do we mean by it? Say for example if you want to capture garbage collection related statistics, you ...

In this article, we will talk about the feature of the CUBA platform that exists for quite a long time, but is still not widely known – front-end SDK generator, and see how it works with CUBA’s REST API addon. Java+JavaScript – marriage born in web Only eight years ago we, Java developers, used JavaScript as a “second-class citizen” language ...

Publish-Subscribe Messaging systems play an important role in any enterprise architecture as it enables reliable integration without tightly coupling the applications. The ability to share data between decoupled systems is not a problem that is easily tackled. Consider an enterprise with multiple applications that are being built independently, with different languages and platforms. It needs to share data and processes ...

One of the widely wasted resources in the world today is Memory. Due to inefficient programming, surprising (sometimes ‘shocking’) amount of memory is wasted. We see this pattern repeated in several enterprise applications. To prove this case, we conducted a small study. We analyzed the famous spring boot pet clinic application to see how much memory it is wasting. This ...

Although Java has version 13 released as for now, there are a lot of production installations running with Java 8. As a professional, I develop Java 8 code many times even these days and I have to be happy that this is not Java 6. On the other hand as an open-source developer, I have my liberty to develop my ...