Mastering Java 11 - Develop Modular and Secure Java Applications Using Concurrency and Advanced JDK Libraries

Description

Key Features: - Explore the latest features in Java 9, Java 10, and Java 11 - Enhance your Java application development and migration approaches - Full coverage of modular Java applications, G1 Garbage Collector, JMH ----- Book Description: Java 11 is a long-term release and its new features add to the richness of the language. It emphasizes variable-type inference, performance improvements, along with simplified multithreading. The Java platform has a special emphasis on modularity, making this the programming platform of choice for millions of developers. The modern Java platform can be used to build robust software applications, including enterprise-level and mobile applications. Fully updated for Java 11, this book stands to help any Java developer enjoy the richness of the Java programming language. Mastering Java 11 is your one-stop guide to fully understanding recent Java platform updates. It contains detailed explanations of the recent features introduced in Java 9, Java 10, and Java 11 along with obtaining practical guidance on how to apply the new features. As you make your way through the chapters, you'll discover further information on the developments of the Java platform and learn about the changes introduced by the variable handles and Project Coin, along with several enhancements in relation to import statements processing. In the concluding chapters, you'll learn to improve your development productivity, making your applications more efficient. You'll also be able to get to grips with the command-line flags with respect to various utilities and the command-line utility changes featured in the current Java platform. By the end of the book, you'll have obtained an advanced level understanding of the Java platform and its recent changes. -------- What you will learn: * Write modular Java applications * Migrate existing Java applications to modular ones * Understand how the default G1 garbage collector works * Leverage the possibilities provided by the newly introduced Java Shell * Performance test your application effectively with the JVM harness * Learn how Java supports the HTTP 2.0 standard * Find out how to use the new Process API * Explore the additional enhancements and features of Java 9, 10, and 11 -------- Who this book is for: Mastering Java 11 is for experienced Java developers with a solid understanding of the Java language and want to progress to an advanced level. ---------- About the Author: Dr. Edward Lavieri is a veteran developer with a strong academic background. He has earned a doctorate in computer science from Colorado Technical University, an MS in management information systems (Bowie State University), an MS in education (Capella University), and an MS in operations management (University of Arkansas). He has been creating and teaching computer science courses since 2002. Edward retired from the US Navy as a Command Master Chief after 25 years of active service. As the founder and creative director of three19, a software design and development studio. Edward is constantly designing and developing software. Cover......Page 1 Title Page......Page 2 Copyright and Credits......Page 3 Dedication......Page 4 Packt Upsell......Page 5 Contributors......Page 6 Table of Contents......Page 8 Preface......Page 21 Technical requirements......Page 27 Time-based releases......Page 28 Understanding the significance of Java 9......Page 29 Breaking the monolith......Page 30 Taking control of external processes......Page 31 Measuring performance with JMH......Page 32 Benefiting from changes introduced with Java 10......Page 33 Garbage collection interface......Page 34 Heap allocation on alternative memory devices......Page 35 Dynamic class-file constants......Page 36 Summary......Page 37 Further reading......Page 38 Chapter 2: Discovering Java 11......Page 39 Technical requirements......Page 40 Improved contended locking......Page 41 Segmented code cache......Page 42 Smart Java compilation......Page 43 Resolving lint and doclint warnings ......Page 44 Tiered attribution for Javac ......Page 45 Annotations pipeline 2.0 ......Page 46 New version-string scheme ......Page 47 Generating runtime compiler tests automatically ......Page 48 Testing class-file attributes generated by Javac ......Page 49 Storing interned strings in class-data sharing archives ......Page 50 The Java 10 improvement......Page 51 Using the AppCDS archive......Page 52 JavaFX overview......Page 53 Implications for Java 9, 10, and 11......Page 54 Merging selected Xerces 2.11.0 updates into JAXP ......Page 56 Updating JavaFX/Media to the newer version of GStreamer ......Page 57 HiDPI graphics on Windows and Linux......Page 58 Marlin graphics renderer ......Page 59 Updated classes in Java 9......Page 60 The pre-Java 9 situation......Page 61 New in Java 9......Page 62 Additional tests for humongous objects in G1 ......Page 63 Java process information......Page 65 HotSpot C++ unit-test framework ......Page 66 Enabling GTK3 on Linux ......Page 67 New HotSpot build system ......Page 68 Summary......Page 69 Further reading......Page 70 Chapter 3: Java 11 Fundamentals......Page 71 Working with variable handlers......Page 72 Working with the AtoMiC ToolKit......Page 74 Using the sun.misc.Unsafe class......Page 75 Import statement depreciation warnings......Page 76 Using the @SafeVarargs annotation......Page 77 The try-with-resource statement......Page 78 Using the diamond operator......Page 79 Discontinuing use of the underscore......Page 80 Making use of private interface methods......Page 81 Import statement processing......Page 83 Inferring local variables ......Page 84 Local variable syntax for Lambda parameters......Page 85 Root certificates......Page 86 Dynamic class-file constants......Page 87 Summary......Page 88 Further reading......Page 89 Chapter 4: Building Modular Applications with Java 11......Page 90 A modular primer......Page 91 The modular JDK......Page 93 Modular source code......Page 96 JDK source code organization before modularization......Page 97 Internationalization......Page 98 Troubleshooting......Page 99 Source code......Page 100 Libraries......Page 101 C header files......Page 102 Modular runtime images......Page 103 Runtime image restructure......Page 104 Module system......Page 106 Module paths......Page 107 Runtime......Page 108 Modular Java application packaging......Page 110 Java Packager options......Page 111 The Java Linker......Page 115 Summary......Page 117 Further reading......Page 118 Chapter 5: Migrating Applications to Java 11......Page 119 A quick review of Project Jigsaw......Page 120 The monolithic nature of the JDK......Page 121 How modules fit into the Java landscape......Page 122 Base module......Page 123 Reliable configuration......Page 125 Strong encapsulation......Page 126 Testing a simple Java application......Page 127 The JRE......Page 130 Accessing internal APIs......Page 131 JAR URL depreciation......Page 132 Extension mechanism......Page 133 The JDK's modularization......Page 134 Advice from Oracle......Page 135 Running your program before recompiling......Page 136 Compiling your application......Page 137 Pre-Java 9 -source and -target options......Page 139 Running jdeps on your code......Page 140 The --add-exports option......Page 144 Java version schema......Page 145 JDK and JRE's layout......Page 146 What has been removed?......Page 149 Updated garbage collection......Page 150 Serialized applets......Page 151 FX XML extension......Page 152 JNLP file syntax......Page 154 Java Environment -jEnv......Page 155 Maven......Page 157 Obtaining the M2Eclipse IDE......Page 158 Further reading......Page 161 Technical requirements......Page 162 Understanding JShell......Page 163 Getting started with JShell......Page 164 Practical uses of JShell......Page 170 Feedback modes......Page 171 Creating a custom feedback mode......Page 175 Listing your assets......Page 177 Modifying text......Page 178 Working with scripts......Page 179 Loading scripts......Page 180 Advanced scripting with JShell......Page 181 Questions......Page 183 Further reading......Page 184 Chapter 7: Leveraging the Default G1 Garbage Collector......Page 185 Object life cycle......Page 186 Object mid-life......Page 187 Mark and sweep......Page 188 Serial garbage collection......Page 189 Garbage collection options......Page 190 The System.gc() method......Page 194 The finalize() method......Page 195 The pre-Java 9 garbage collection schema......Page 197 Visualizing garbage collection......Page 198 Case study – games written with Java......Page 199 Collecting garbage with the new Java platform......Page 200 Default garbage collection ......Page 201 Depreciated garbage collection combinations......Page 202 Tags......Page 204 Decorations......Page 205 Unified GC logging......Page 206 Garbage collection logging options......Page 207 Macros......Page 208 Garbage collection interface......Page 209 Persistent issues......Page 210 Making objects eligible for garbage collection......Page 211 Summary......Page 213 Further reading......Page 214 Technical requirements......Page 215 Microbenchmarking overview......Page 216 Installing Java and Eclipse ......Page 217 Hands-on experiment......Page 218 Microbenchmarking with Maven......Page 220 Benchmarking options......Page 227 Time units......Page 228 OS schedulers......Page 229 Eliminating dead-code and constant folding......Page 230 Cache capacity......Page 231 Further reading......Page 232 Chapter 9: Making Use of the Process API......Page 233 Introducing processes......Page 234 Working with the ProcessHandle interface......Page 235 Getting information about processes......Page 236 Listing processes......Page 238 Listing descendants......Page 239 Listing all processes......Page 241 Terminating processes......Page 242 Main class......Page 245 Parameters class......Page 246 ParamsAndHandle......Page 247 ControlDaemon......Page 248 Questions......Page 251 Further reading......Page 252 Chapter 10: Fine-Grained Stack Tracing......Page 253 Overview of the Java Stack......Page 254 The importance of stack information......Page 255 Example – restricting callers......Page 256 Example – getting loggers for callers......Page 259 Getting an instance of StackWalker......Page 260 SHOW_HIDDEN_FRAMES......Page 261 Walking methods......Page 265 StackFrame......Page 267 Performance......Page 268 Questions......Page 269 Chapter 11: New Tools and Tool Enhancements......Page 270 The pre-Java 9 HTTP client......Page 271 The Java 11 HTTP client......Page 273 Limitations of the HTTP client API......Page 274 The pre-Java 9 Doclet API......Page 276 API interfaces......Page 278 Compiler tree API......Page 279 Language model API......Page 282 The SourceVersion enum......Page 283 The UnknownEntityException exception......Page 285 Using the HTML5 Javadoc......Page 286 Javadoc search......Page 291 Changes to the Multiple JRE feature......Page 292 Nashorn......Page 293 Using Nashorn as a command-line tool......Page 294 Using Nashorn as an embedded interpreter......Page 297 ECMAScript......Page 298 Parser API......Page 299 Multiple-release JAR files......Page 301 Identifying multi-release JAR files......Page 302 Related JDK changes......Page 303 Java-level JVM Compiler Interface......Page 304 JavaBean......Page 305 SwingContainer......Page 306 TIFF support......Page 307 The java.util.logging package......Page 310 Logging in the modern Java platform......Page 312 XML Catalogs......Page 313 Earlier XML Catalogs......Page 314 Collections......Page 315 Using collections prior to the modern Java platform......Page 316 Using new collection literals......Page 318 Platform-specific desktop features......Page 319 The reason for the enhancement......Page 320 Argument handling......Page 321 Additional combinations......Page 322 Enhanced depreciation......Page 323 Summary......Page 324 Further reading......Page 325 Technical requirements......Page 326 Reactive programming......Page 327 Reactive programming standardization......Page 328 The Flow.Subscriber interface......Page 330 The Flow.Processor interface......Page 331 Sample implementation......Page 332 Concurrency explained......Page 333 System configurations......Page 334 Java threads......Page 335 Concurrency improvements......Page 338 CompletableFuture API enhancements......Page 339 Class details......Page 340 Enhancements......Page 344 Spin-wait hints......Page 345 Further reading......Page 346 Technical requirements......Page 347 Datagram Transport Layer Security......Page 348 DTLS protocol version 1.0......Page 349 DTLS protocol version 1.2......Page 350 DTLS support in Java......Page 353 Keystore primer......Page 354 Java Keystore (JKS)......Page 355 The CallbackHandlerProtection class......Page 356 The SecretKeyEntry class......Page 357 The TrustedCertificateEntry class......Page 358 Improving security application performance......Page 359 Security policy enforcement......Page 360 The java.Security.CodeSource package......Page 361 Package checking algorithm......Page 362 TLS ALPN extension......Page 363 The javax.net.ssl package......Page 364 The java.net.ssl package extension......Page 365 Hashing......Page 367 OCSP stapling for TLS......Page 369 OCSP stapling primer......Page 370 Recent changes to the Java platform......Page 371 DRBG-based SecureRandom implementations......Page 372 Summary......Page 373 Further reading......Page 374 Technical requirements......Page 375 Unified JVM logging......Page 376 Command-line options......Page 377 Decorations......Page 379 Working with Xlog output......Page 380 Compilation modes......Page 381 Tiered compilation......Page 382 Compiler control in Java 11......Page 383 Diagnostic commands......Page 385 Removing your JHAT......Page 386 Command-line flag argument validation......Page 387 Compiling for older platform versions......Page 389 Questions......Page 391 Further reading......Page 392 Technical requirements......Page 393 The ResourceBundle class......Page 394 The nested class......Page 395 Fields and constructors......Page 399 Methods......Page 400 Unicode support......Page 406 The java.text package......Page 407 Additional significance......Page 408 Linux/AArch64 port......Page 409 Multiresolution images......Page 410 Common Locale Data Repository......Page 411 Questions......Page 412 Technical requirements......Page 413 An overview of the JDK Enhancement Proposal......Page 414 JEP 334: JVM Constants API......Page 415 JEP Submitted......Page 416 JEP Drafted......Page 417 Ongoing special projects......Page 418 Caciocavallo......Page 419 HarfBuzz integration......Page 420 Shenandoah......Page 421 Questions......Page 422 Chapter 17: Contributing to the Java Platform......Page 423 The Java Community......Page 424 Java Community Process......Page 425 Writing technical articles ......Page 426 Questions......Page 427 Chapter 2......Page 428 Chapter 4......Page 429 Chapter 5......Page 430 Chapter 6......Page 431 Chapter 7......Page 432 Chapter 8......Page 433 Chapter 10......Page 434 Chapter 11......Page 435 Chapter 12......Page 436 Chapter 13......Page 437 Chapter 15......Page 438 Chapter 16......Page 439 Chapter 17......Page 440 Other Books You May Enjoy......Page 441 Index......Page 444