This book is a collection of tutorial notes and sample codes written by the author while he was learning JVM GC (Garbage Collection) processes. Topics include Java Garbage Collectors, STW (Stop-The-World), Serial Collector, Parallel Collector, Concurrent Collector, G1 Collector, GC Algorithms, Generational GC, Regional GC, Heap Memory Management, Young/New Generation, Tenured/Old Generation, Object Reference, Eden Space, Survivor Spaces, Minor GC, Major GC, Full GC, Performance Tuning, Throughput/Latency Performance, Heap Footprint. Updated in 2022 (Version v1.11) with JVM 17. For latest updates and free sample chapters, visit https://www.herongyang.com/Java-GC.

This book is a collection of tutorial notes and sample codes written by the author while he was learning JVM GC (Garbage Collection) processes. Topics include Java Garbage Collectors, STW (Stop-The-World), Serial Collector, Parallel Collector, Concurrent Collector, G1 Collector, GC Algorithms, Generational GC, Regional GC, Heap Memory Management, Young/New Generation, Tenured/Old Generation, Object Reference, Eden Space, Survivor Spaces, Minor GC, Major GC, Full GC, Performance Tuning, Throughput/Latency Performance, Heap Footprint. Updated in 2019 (Version 1.10) with JVM 12. For latest updates and free sample chapters, visit http://www.herongyang.com/Java-GC.

This tutorial book is a collection of notes and sample codes written by the author while he was learning Java himself. Topics covered in the book include: Java language basics; execution environment; generic classes and parameterized type; generic methods and type argument inferences; enum types and constants; lambda expressions; annotation types and invocations; Java modules; execution threads and synchronization; memory management and garbage collection. Updated in 2024 (Version v8.22) with JDK 20. For latest updates and free sample chapters, visit https://www.herongyang.com/Java.

This book is a collection of notes and sample codes written by the author while he was learning JVM himself. Topics include JVM (Java Virtual Machine) Architecture and Components; Oracle JVM implementation - HotSpot; Eclipse JVM implementation - Eclipse OpenJ9; java.lang.Runtime - The JVM Instance class; Loading Native Libraries; java.lang.System - Representing Operating System; java.lang.ClassLoader - Loading class files; java.lang.Class - Class reflections; Runtime data areas, heap memory and Garbage Collection; Stack, Frame and Stack overflow; Multi-threading impacts on CPU and I/O; CDS (Class Data Sharing); Micro Benchmark tests on different types of operations. Updated in 2024 (Version v5.13) with HotSpot JVM 20. For latest updates and free sample chapters, visit https://www.herongyang.com/JVM.

This tutorial book based on notes and sample codes collected by the author while he was learning Java tools himself. Topics includes: 'java/javaw' Launcher, 'javac' Compiler, 'javadoc' Document Generator, 'javap' Class File Disassembler, 'jar/jarsigner' Archive Tool, 'jconsole' Console, 'jdb' Debugger, 'jdeps' Dependency Analyzer, 'jdeprscan' Deprecated API Scanner, 'jhat' Heap Analysis Tool, 'jlink' JRE Linker, 'jhsdb' HotSpot Debugger, 'jmap' Memory Dumper, 'jmc' Mission Control, 'jpackage' Binary Package Builder, 'jrunscript' Script Shell, 'jstack' Stack Dumper, 'jstat' Statistics, 'jstatd' Statistics Daemon, 'jvisualvm' Visual VM, 'jwebserver' Web Server, 'keytool' Keystore Tool, 'serialver' serialVersionUID generator. Updated in 2023 (Version v6.23) with JDK 20. For latest updates and free sample chapters, visit https://www.herongyang.com/Java-Tools.

This tutorial book is a collection of notes and sample codes written by the author while he was learning Java Swing and AWT himself. Topics include Swing and AWT (Abstract Windows Toolkit) class library; graphical components: JButton, JCheckbox, JComboBox, JFrame, JLabel, JMenu, JRadioButton, JTextField; frame layouts; menus; dialog boxes; editor pane; Unicode and Chinese. Updated in 2024 (Version v4.32) with JDK 20. For latest updates and free sample chapters, visit https://www.herongyang.com/Swing.

This book is a collection of tutorial examples and notes written by the author while he was learning JavaScript. Topics include ECMAScript specifications; data types, variables and expressions; flow control statements: 'if', 'for', 'switch', and 'while'; using arrays and objects; defining and calling functions; embedding JavaScript code in HTML documents; DOM (Document Object Model) API levels; using the JavaScript console in Web browsers; creating new object types with prototypes; building prototype inheritance hierarchy; managing functions as objects; using jrunscript JavaScript shell; sending AJAX (XMLHttpRequest) requests. Updated in 2023 (Version 2.33) with AJAX tutorials. For latest updates and free sample chapters, visit https://www.herongyang.com/JavaScript.