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Java Application Remote Debugging 1. Overview Debugging a remote Java Application can be handy in more than one case. In this tutorial, we’ll discover how to do that using JDK’s tooling. 2. The Application Let’s start by writing an application. We’ll run it on a remote location and debug it… Continue Reading java-application-remote-debugging

Causes and Avoidance of java.lang.VerifyError 1. Introduction In this tutorial, we’ll look at the cause of java.lang.VerifyError errors and multiple ways to avoid it. 2. Cause The Java Virtual Machine (JVM) distrusts all loaded bytecode as a core tenet of the Java Security Model. During runtime, the JVM will load .class… Continue Reading java-lang-verifyerror

Verbose Garbage Collection in Java 1. Overview In this tutorial, we’ll take a look at how to turn on verbose garbage collection in a Java application. We’ll begin by introducing what verbose garbage collection is and why it can be useful. Next, we’ll look at several different examples and we’ll… Continue Reading java-verbose-gc

An Introduction to ZGC: A Scalable and Experimental Low-Latency JVM Garbage Collector 1. Introduction Today, it’s not uncommon for applications to serve thousands or even millions of users concurrently. Such applications need enormous amounts of memory. However, managing all that memory may easily impact application performance. To address this issue,… Continue Reading jvm-zgc-garbage-collector

JVM Log Forging 1. Overview In this quick article, we’ll explore one of the most common security issues in JVM world – Log Forging. We’ll also show an example technique that can protect us from this security concern. 2. What Is Log Forging? According to OWASP, log forging is one… Continue Reading jvm-log-forging

Guide to Kotlin @JvmField 1. Overview In this tutorial, we’re going to explore the @JvmField annotation out of Kotlin. Kotlin has its approach to classes and properties, which differs from the approach used in Java. The @JvmField annotation makes it possible to achieve compatibility between the two languages. 2. Field… Continue Reading kotlin-jvm-field-annotation

An Introduction to Epsilon GC: A No-Op Experimental Garbage Collector 1. Introduction Java 11 introduced a No-Op Garbage Collector called Epsilon, which promises the lowest GC overhead possible. In this short tutorial, we’ll explore how Epsilon works, and we’ll mention the common use cases. 2. Quick Hands-On Let’s start with… Continue Reading jvm-epsilon-gc-garbage-collector

OpenJDK Project Loom [[project loom]] === 1. Overview [[project loom]]In this article, we’ll take a quick look at Project Loom. In essence, the primary goal of Project Loom is to support a high-throughput, lightweight concurrency model in Java. [[project loom-1]] === 2. Project Loom [[project loom-1]]Project Loom is an attempt… Continue Reading openjdk-project-loom

Deep Dive Into the New Java JIT Compiler – Graal 1. Overview In this tutorial, we’ll take a deeper look at the new Java Just-In-Time (JIT) compiler, called Graal. We’ll see what the project Graal is and describe one of its parts, a high-performance dynamic JIT compiler. 2. What is… Continue Reading graal-java-jit-compiler