Java » JVM

Java is the popular programming language that originated in 1995. Today, the Java ecosystem includes a very large number of specifications, libraries, frameworks, tools, as well as a thriving community. Take a dive through our collection of Java tutorials that cover a wide array of Java-related topics.

>> Guide to Find the Java .class Version

>> Does GC Release Back Memory to OS?

>> List All the Classes Loaded in the JVM

>> Guide to Garbage Collector Roots

>> Get All Running JVM Threads

>> Choosing a GC Algorithm in Java

>> Diagnosing a Running JVM

>> Tiered Compilation in JVM

>> Find the GC Algorithm Used by a JVM Instance

>> JVM Parameters InitialRAMPercentage, MinRAMPercentage, and MaxRAMPercentage

>> Getting the Java Version at Runtime

>> JVM Storage for Static Members

>> How Many Threads Can a Java VM Support?

>> An Introduction to the Constant Pool in the JVM

>> Introduction to JVM Intrinsics

>> How to Analyze Java Thread Dumps

>> Experimental Garbage Collectors in the JVM

>> Check if a Java Program Is Running in 64-Bit or 32-Bit JVM

>> What Is the Difference Between DVM and JVM?

>> List All Classes Loaded in a Specific Class Loader

>> Performance Comparison of boolean[] vs BitSet

>> Difference in Used, Committed, and Max Heap Memory

>> Command-Line Tools to Find the Java Heap Size

>> Performance Effects of Exceptions in Java

>> A Guide to False Sharing and @Contended

>> Garbage Collection Logging to a File in Java

>> Garbage Collection and Cyclic References in Java

>> Memory Address of Objects in Java

>> Measuring Object Sizes in the JVM

>> Configuring Stack Sizes in the JVM

>> Where Is the Array Length Stored in JVM?

>> Memory Layout of Objects in Java

>> Java Heap Space Memory with the Runtime API

>> Exploring JVM Tuning Flags

>> boolean and boolean[] Memory Layout in the JVM

>> View Bytecode of a Class File in Java

>> <init> and <clinit> Methods in the JVM

>> What Causes java.lang.OutOfMemoryError: unable to create new native thread

>> An Introduction to Invoke Dynamic in the JVM

>> Java-R Integration

>> Could Not Reserve Enough Space For Object Heap

>> Getting Started with CRaSH

>> How to Set the JVM Time Zone

>> Runtime.getRuntime().halt() vs System.exit() in Java

>> Adding Shutdown Hooks for JVM Applications

>> Causes and Avoidance of java.lang.VerifyError

>> Java Application Remote Debugging

>> Compressed OOPs in the JVM

>> How to Fix java.lang.UnsupportedClassVersionError

>> Method Inlining in the JVM

>> An Introduction to Epsilon GC: A No-Op Experimental Garbage Collector

>> Native Memory Tracking in JVM

>> An Introduction to ZGC: A Scalable and Experimental Low-Latency JVM Garbage Collector

>> Differences Between Oracle JDK and OpenJDK

>> OpenJDK Project Loom

>> Verbose Garbage Collection in Java

>> Introduction to JVM Code Cache

>> Deep Dive Into the New Java JIT Compiler – Graal

>> Difference Between JVM, JRE, and JDK

>> OutOfMemoryError: GC Overhead Limit Exceeded

>> How to Warm Up the JVM

>> Guide to the Most Important JVM Parameters

>> JVM Garbage Collectors

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