Ideal for working programmers new to Java, this best-selling book guides you through the language features and APIs of Java 21. Through fun, compelling, and realistic examples, author Marc Loy introduces you to Java fundamentals, including its class libraries, programming techniques, and idioms, with an eye toward building real applications.
This updated sixth edition expands the content to cover lambdas and streams, and shows you how to use a functional paradigm in Java. You'll learn about the latest Java features introduced since the book's fifth edition, from JDK 15 through 21. You'll also take a deep dive into the virtual threads introduced as Project Loom in Java 19 and become familiar with the public release of JDK 21 LTS.
The Java programming language was designed to be a machine-independent programming language that is both safe enough to traverse networks and powerful enough to replace native executable code. Java addresses the issues raised here and played a starring role in the growth of the internet, leading to where we are today.
Initially, most of the enthusiasm for Java centered on its capabilities for building embedded applications for the web, called applets. But in the early days, applets and other client-side graphical user interfaces (GUIs) written in Java were limited. Today, Java has Swing, a sophisticated toolkit for building GUIs. This development has allowed Java to become a viable platform for developing traditional client-side application software, although many other contenders have entered this crowded field.
This guide helps you:
Learn the structure of the Java language and Java applications
Write, compile, and execute Java applications
Understand the basics of Java threading and concurrent programming
Learn Java I/O basics, including local files and network resources
Create compelling interfaces with an eye toward usability
Learn how functional features have been integrated in Java
Keep up with Java developments as new versions are released
Author(s): Marc Loy, Patrick Niemeyer, Daniel Leuck
Edition: 6
Publisher: O'Reilly Media, Inc.
Year: 2023
Language: English
Commentary: Revision History for the Early Release: 2023-02-17: Second Release | The book cover within the epub is for the 5th edition
Pages: 143
City: Sebastopol, CA
Tags: Java; Java Programming; Object-Oriented Programming
1. A Modern Language
Enter Java
Java’s Origins
Growing Up
A Virtual Machine
Java Compared with Other Languages
Safety of Design
Simplify, Simplify, Simplify…<200b>
Type Safety and Method Binding
Incremental Development
Dynamic Memory Management
Error Handling
Threads
Scalability
Safety of Implementation
The Verifier
Class Loaders
Security Managers
Application and User-Level Security
A Java Road Map
The Past: Java 1.0–Java 20
The Present: Java 21
The Future
Exercises
2. A First Application
Java Tools and Environment
Installing the JDK
Installing Corretto on Linux
Installing Corretto on macOS
Installing Corretto on Windows
Installing IntelliJ IDEA and Creating a Project
Running the Project
Grabbing the Learning Java Examples
HelloJava
Classes
The main() Method
Classes and Objects
Variables and Class Types
HelloComponent
Inheritance
The JComponent Class
Relationships and Finger-Pointing
Packages and Imports
The paintComponent() Method
HelloJava2: The Sequel
Instance Variables
Constructors
Events
The repaint() Method
Interfaces
Goodbye and Hello Again
Review Questions
Code Exercises
3. Tools of the Trade
JDK Environment
The Java VM
Running Java Applications
System Properties
Preview Features
The Classpath
CLASSPATH on Unix and macOS
CLASSPATH on Windows
CLASSPATH Wildcards
Modules
The Java Compiler
Compiling Preview Features
Trying Java
JAR Files
The jar Utility
Tool Wrap Up
Review Questions
Code Exercises
Advanced Code Exercises
A. Code Examples and IntelliJ IDEA
Grabbing the Main Code Examples
Installing IntelliJ IDEA
Installing on Linux
Installing on macOS
Installing on Windows
Importing the Examples
Running the Examples
B. Exercise Answers
Chapter 1: A Modern Language
Chapter 2: A First Application
Code Exercises
Chapter 3: Tools of the Trade
Code Exercises
Chapter 4: The Java Language
Code Exercises
Advanced Exercises
Chapter 5: Objects in Java
Code Exercises
Advanced Exercises
Chapter 6: Error Handling and Logging
Code Exercises
Advanced Exercises
Chapter 7: Collections and Generics
Code Exercises
Advanced Exercises
Chapter 8: Text and Core Utilities
Code Exercises
Chapter 9: Threads
Code Exercises
Chapter 10
Code Exercises
Advanced Exercises
Chapter 11
Code Exercises
Advanced Exercises
Chapter 12
Code Exercises
Chapter 13
Code Exercises
Chapter 14
Code Exercises
