Java 7入门指南：为初学者打造

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"《Java 7 for Absolute Beginners》是一本专为初学者设计的Java 7教程，由Jay Bryant编著。该书旨在帮助那些对编程领域尚不熟悉的读者快速上手Java 7，这是Java语言的一个重要版本，于2012年发布。作者通过简洁易懂的方式，将复杂的Java概念分解为基础知识，使读者能够逐步掌握这门广泛应用于软件开发的编程语言。本书的核心内容包括但不限于：Java语言的基础语法，如变量、数据类型、控制结构（如循环和条件语句）、函数和类的概念。此外，书中还会介绍面向对象编程的核心原则，如封装、继承和多态，这些都是Java编程的基石。Java 7的新特性，如Lambda表达式和并行处理，也会在书中得到详细的讲解，以展示Java语言在现代技术中的实用性。版权方面，本书受到版权法保护，所有权利归出版商所有。除非用于学术评论、研究分析或特定计算机系统上的短期使用，否则复制或再分发必须遵循Springer出版社的版权许可规定。读者可以通过Springer的RightsLink系统申请使用权限，确保符合法律要求。《Java 7 for Absolute Beginners》是一本既适合自学也适合课堂教学的资源，它不仅提供理论知识，还包含大量的实践示例和案例，帮助读者在实际项目中应用所学知识。无论你是初次接触编程，还是希望巩固基础，这本书都是一个理想的起点。通过阅读和实践，读者可以建立起坚实的Java编程基础，为进一步学习高级主题打下坚实的基础。"

About the Technical Reviewer

■

Massimo Nardone

was born under Mount Vesuvius and holds a Master of

Science Degree in Computing Science from the University of Salerno, Italy. He

currently works as a Senior IT Security, Cloud and Infrastructure Architect, and

is the Finnish Invention Development Team Leader (FIDTL) for IBM Finland.

With more then 16 years of experience in Mobile, Security, and WWW

technology areas for both national and international projects, he has worked as

a Project Manager, Software Engineer, Research Engineer, Chief Security

Architect, and Software Specialist. Massimo is also a visiting lecturer and

supervisor for exercises at the Networking Laboratory of the Helsinki

University of Technology (TKK) for the course "Security of Communication

Protocols".

www.it-ebooks.info

xvii

Introduction

Who This Book Is For

The title says “for Absolute Beginners.” By that, I mean absolute beginners at programming. My original

audience was teenagers whom I hope will go to college, get degrees in Mathematics, Computer Science,

or Electrical Engineering (or perhaps Technical Communication or Graphic Design), and then enter the

software industry. However, I quickly realized that adults might also wish to learn to program, as part of

changing careers, as a hobby, or simply out of curiosity. As a result, I've written the book for anyone who

wants to learn to program but doesn't have any programming knowledge, regardless of other

characteristics such as age or future career paths.

How This Book Is Structured

The first chapter gets you started by showing you how to install a development environment and by

getting you through writing your first program. The next few chapters cover the basics of how Java

works, including operators, data types, branching and looping, and how object-oriented languages

define and solve problems. The middle chapters detail some of the “bread and butter” tasks that

software developers must continually do, such as working with files and their contents and creating a

user interface for a program. Once the book gets through all that, it turns to some topics that are more

fun (I think), such as creating animations and video games. The book closes with a chapter that briefly

introduces two topics that, although somewhat advanced, may let you do good things in your own

programs once you finish the book.

All through the book, I include code samples that you can type into your development environment

and run. You can also get the code from the Apress web site. I've also included lessons from my 25 years

(twenty of them full-time) in software development. I hope those real-world experiences make the highly

abstract field of software development more concrete for you. It pays to remember that, although the

field is by nature theoretical, the problems we want to solve mostly exist in the real world.

Conventions

This book uses a number of formatting conventions that should make it easier to read. Formatting can't

substitute for poor writing or poor coding, but it can help to make either more clear. To that end, the

book incorporates the following conventions:

Code within other text, usually within a paragraph, appears as follows: java.lang.System

Code listings appear as follows:

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