This is the up-to-date, practical guide to Java youve been looking for! Whether youre a beginner, youre switching to Java from another language, or youre just looking to brush up on your Java skills, this is the only book you need. Youll get a thorough grounding in the basics of the Java language, including classes, objects, arrays, strings, and exceptions. You'll also learn about more advanced topics: threads, algorithms, XML, JUnit testing, and much more. This book belongs on every Java programmer's shelf! Highlights: Classes and objectsArraysException handlingObject-oriented programmingCharacters and stringsGenericsClass libraryConcurrent programmingData structuresLambda expressionsJUnit testingJDK tools

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... Target Group ... 31 ... What This Book Is Not ... 31 ... My Life and Java, Or “Why a Java Book?” ... 32 ... Software and Versions ... 33 ... Which Java Version to Use ... 33 ... Using This Book to Learn ... 33 ... Personal Learning Strategies ... 34 ... Focusing on the Essentials ... 35 ... Special Sections ... 35 ... Tasks ... 36 ... Structure of This Book ... 36 ... Conventions ... 38 ... Program Listings ... 40 ... Application Programming Interface Documentation in This Book ... 40 ... Executable Programs ... 41 ... Acknowledgments ... 41 ... Resources for This Book ... 42 ... Feedback ... 42 1.1 ... Historical Background ... 43 1.2 ... On the Popularity of Java: The Key Features ... 45 1.3 ... Java versus Other Languages* ... 56 1.4 ... Further Development and Losses ... 59 1.5 ... Java Platforms ... 62 1.6 ... Java Platform, Standard Edition, Implementations ... 67 1.7 ... Installing the Java Development Kit ... 69 1.8 ... Compiling and Testing the First Program ... 71 1.9 ... Development Environments ... 75 1.10 ... Further Reading ... 81 2.1 ... Elements of the Java Programming Language ... 83 2.2 ... From Classes to Statements ... 91 2.3 ... Data Types, Typing, Variables, and Assignments ... 102 2.4 ... Expressions, Operands, and Operators ... 119 2.5 ... Conditional Statements or Case Distinctions ... 142 2.6 ... Always the Same with Loops ... 160 2.7 ... Methods of a Class ... 177 2.8 ... Further Reading ... 200 3.1 ... Object-Oriented Programming ... 201 3.2 ... Members of a Class ... 203 3.3 ... Natural Modeling Using Unified Modeling Language* ... 204 3.4 ... Creating New Objects ... 206 3.5 ... ZZZZZnake ... 218 3.6 ... Tying Packages, Imports, and Compilation Units ... 220 3.7 ... Using References, Diversity, Identity, and Equality ... 228 3.8 ... Further Reading ... 239 4.1 ... Simple Field Work ... 241 4.2 ... The Extended for Loop ... 252 4.3 ... A Method with a Variable Number of Arguments ... 256 4.4 ... Multidimensional Arrays* ... 259 4.5 ... Library Support for Arrays ... 264 4.6 ... Using the Arrays Class for Comparing, Filling, Searching, and Sorting ... 267 4.7 ... The Entry Point for the Runtime System: main(...) ... 281 4.8 ... Further Reading ... 285 5.1 ... From ASCII via ISO-8859-1 to Unicode ... 287 5.2 ... Data Types for Characters and Strings ... 295 5.3 ... The Character Class ... 296 5.4 ... Strings ... 301 5.5 ... The String Class and Its Methods ... 303 5.6 ... Mutable Strings with StringBuilder and StringBuffer ... 333 5.7 ... CharSequence as Base Type ... 342 5.8 ... Converting Primitives and Strings ... 345 5.9 ... Concatenating Strings ... 353 5.10 ... Decomposing Strings ... 355 5.11 ... Formatting Outputs ... 360 5.12 ... Further Reading ... 367 6.1 ... Declaring Custom Classes with Members ... 369 6.2 ... Privacy and Visibility ... 380 6.3 ... One for All: Static Methods and Class Variables ... 390 6.4 ... Constants and Enumerations ... 397 6.5 ... Creating and Destroying Objects ... 405 6.6 ... Class and Object Initialization* ... 418 6.7 ... Conclusion ... 426 7.1 ... Associations between Objects ... 427 7.2 ... Inheritance ... 436 7.3 ... Types in Hierarchies ... 447 7.4 ... Overriding Methods ... 457 7.5 ... Testing Dynamic Bindings ... 463 7.6 ... Final Classes and Final Methods ... 466 7.7 ... Abstract Classes and Abstract Methods ... 468 7.8 ... Further Information on Overriding and Dynamic Binding ... 476 7.9 ... A Programming Task ... 482 8.1 ... Interfaces ... 483 8.2 ... Enumeration Types ... 513 8.3 ... Sealed Classes and Interfaces ... 523 8.4 ... Records ... 529 9.1 ... Fencing In Problem Areas ... 539 9.2 ... Redirecting Exceptions and throws at the Head of Methods/Constructors ... 549 9.3 ... The Class Hierarchy of Exceptions ... 550 9.4 ... Final Handling Using finally ... 558 9.5 ... Triggering Custom Exceptions ... 564 9.6 ... try with Resources (Automatic Resource Management) ... 579 9.7 ... Special Features of Exception Handling* ... 588 9.8 ... Hard Errors: Error* ... 593 9.9 ... Assertions* ... 594 9.10 ... Conclusion ... 597 10.1 ... Nested Classes, Interfaces, and Enumerations ... 599 10.2 ... Static Nested Types ... 601 10.3 ... Non-Static Nested Types ... 603 10.4 ... Local Classes ... 605 10.5 ... Anonymous Inner Classes ... 607 10.6 ... Nests ... 613 10.7 ... Conclusion ... 614 11.1 ... Object Is the Mother of All Classes ... 616 11.2 ... Weak References and Cleaners ... 638 11.3 ... The java.util.Objects Utility Class ... 639 11.4 ... Comparing Objects and Establishing Order ... 643 11.5 ... Wrapper Classes and Autoboxing ... 651 11.6 ... Iterator, Iterable* ... 670 11.7 ... Annotations in Java Platform, Standard Edition ... 677 11.8 ... Further Reading ... 682 12.1 ... Introduction to Java Generics ... 683 12.2 ... Implementing Generics, Type Erasure, and Raw Types ... 699 12.3 ... Restricting Types via Bounds ... 706 12.4 ... Type Parameters in the throws Clause* ... 710 12.5 ... Inheritance and Invariance with Generics ... 713 12.6 ... Consequences of Type Erasure: Type Tokens, Arrays* ... 725 12.7 ... Further Reading ... 729 13.1 ... Functional Interfaces and Lambda Expressions ... 731 13.2 ... Method References ... 755 13.3 ... Constructor References ... 759 13.4 ... Functional Programming ... 762 13.5 ... Functional Interfaces from the java.util.function Package ... 770 13.6 ... Optional Is Not a Non-Starter ... 784 13.7 ... What Is So Functional Now? ... 795 13.8 ... Further Reading ... 797 14.1 ... SOLID Modeling ... 799 14.2 ... Architecture, Design, and Implementation ... 803 14.3 ... Design Patterns ... 803 14.4 ... Further Reading ... 811 15.1 ... Class Loader and Module/Classpath ... 813 15.2 ... Importing Modules ... 819 15.3 ... Developing Custom Modules ... 825 15.4 ... Further Reading ... 833 16.1 ... The Java Class Philosophy ... 835 16.2 ... Simple Time Measurement and Profiling* ... 842 16.3 ... The Class Class ... 843 16.4 ... The Utility Classes System and Members ... 846 16.5 ... The Languages of Different Countries ... 853 16.6 ... Overview of Important Date Classes ... 857 16.7 ... Date-Time API ... 860 16.8 ... Logging with Java ... 864 16.9 ... Maven: Resolving Build Management and Dependencies ... 867 16.10 ... Further Reading ... 869 17.1 ... Concurrency and Parallelism ... 871 17.2 ... Generating Existing Threads and New Threads ... 875 17.3 ... Thread Members and States ... 882 17.4 ... Enter the Executor ... 893 17.5 ... Further Reading ... 907 18.1 ... Lists ... 909 18.2 ... Sets ... 928 18.3 ... Associative Memory ... 938 18.4 ... The Stream API ... 944 18.5 ... Creating a Stream ... 947 18.6 ... Terminal Operations ... 951 18.7 ... Intermediary Operations ... 962 18.8 ... Further Reading ... 968 19.1 ... Old and New Worlds in java.io and java.nio ... 969 19.2 ... File Systems and Paths ... 970 19.3 ... Random Access Files ... 980 19.4 ... Base Classes for Input/Output ... 985 19.5 ... Reading from Files and Writing to Files ... 996 19.6 ... Further Reading ... 1003 20.1 ... Relational Databases and Java Access ... 1005 20.2 ... A Sample Query ... 1008 20.3 ... Further Reading ... 1009 21.1 ... Bits and Bytes ... 1011 21.2 ... Floating Point Arithmetic in Java ... 1025 21.3 ... The Members of the Math Class ... 1031 21.4 ... Accuracy and the Value Range of Type and Overflow Control* ... 1042 21.5 ... Random Numbers: Random, ThreadLocalRandom, and SecureRandom ... 1046 21.6 ... Large Numbers* ... 1051 21.7 ... Money and Currency ... 1064 21.8 ... Further Reading ... 1066 22.1 ... Software Tests ... 1067 22.2 ... The JUnit Testing Framework ... 1068 22.3 ... Java Assertion Libraries and AssertJ ... 1081 22.4 ... Structure of Large Test Cases ... 1083 22.5 ... Good Design Enables Effective Testing ... 1085 22.6 ... Dummy, Fake, Stub, and Mock ... 1087 22.7 ... JUnit Extensions and Testing Add-Ons ... 1089 22.8 ... Further Reading ... 1089 23.1 ... Overview ... 1091 23.2 ... Translating Java Sources ... 1092 23.3 ... The Java Runtime Environment ... 1093 23.4 ... Documentation Comments with Javadoc ... 1096 23.5 ... The JAR Archive Format ... 1105 23.6 ... Further Reading ... 1107