The Definitive Guide to Java Platform Best Practices—Updated for Java 9
Java has changed dramatically since the previous edition of Effective Java was published shortly after the release of Java 6. This Jolt award-winning classic has now been thoroughly updated to take full advantage of the latest language and library features. The support in modern Java for multiple paradigms increases the need for specific best-practices advice, and this book delivers.
As in previous editions, each chapter of Effective Java, Third Edition, consists of several “items,” each presented in the form of a short, stand-alone essay that provides specific advice, insight into Java platform subtleties, and updated code examples. The comprehensive descriptions and explanations for each item illuminate what to do, what not to do, and why.
The third edition covers language and library features added in Java 7, 8, and 9, including the functional programming constructs that were added to its object-oriented roots. Many new items have been added, including a chapter devoted to lambdas and streams.
New coverage includes
Functional interfaces, lambda expressions, method references, and streams
Default and static methods in interfaces
Type inference, including the diamond operator for generic types
The @SafeVarargs annotation
The try-with-resources statement
New library features such as the Optional<T> interface, java.time, and the convenience factory methods for collections
- 涵盖Java 9最新特性，提供最佳实践指南
- 通过独立条目形式，深入解析平台细节
- 包含大量JDK内部代码示例与避坑建议
- 具备一定Java基础的中高级开发者
- 希望提升代码质量与可维护性的工程师
- 需要深入理解Java平台机制的技术人员
- 建议阅读英文版，中文翻译质量参差不齐
- 结合项目实战经验阅读，共鸣感更强
- 无需通读，可根据当前需求选择性查阅
- Java领域公认的经典必读之作
- 能显著减少开发弯路，提升编码规范
- 内容详实但需一定基础，新手慎入
本导读基于书籍简介、目录、原文摘录、短评和书评生成，不等同于全文精读。
- "例如，构造器 BigInteger(int, int, Random)会返回一个为可能素数(probable prime)的 BigInteger， 但如果用一个名为 BigInteger.probablePrime 的静态工厂方法来表示，效果会更好。"
- "大多数程序员都不需要这个方法（指枚举的ordinal方法），他是设计成用于像EnumSet和EnumMap这种基于枚举的通用数据结构的，除非你在编写的是这类数据结构，否则最好完全避免使用ordinal方法。"
- "如果类具有从客户端得到或返回到客户端的可变组件。类就必须保护性的拷贝这些组件。如果拷贝的成本受到限制，并且信任他的客户端不会不恰当的修改组件，就可以在文档中指明客户端的职责是不得修改受到影响的组件，以此来代替保护性拷贝"
- "谨慎地选择方法的名称"
- "不要过于追求提供便利的方法"
- "避免过长的参数列表"
- "要调用哪个重载（overloading）方法是在编译期做出决定的 重载方法（overloaded method）的选择是静态的，而对于被覆盖的方法（overridden method）的选择则是动态的"
- "“能够重载方法”并不意味着就“应该重载方法”。一般情况下，对于多个具有相同参数数目的方法来说。应该尽量避免重载方法。"
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