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Apache-2.0

effective-java-third-edition

介绍

Effective Java 第三版全文翻译,纯属个人业余翻译,不合理的地方,望指正,感激不尽!(OS:如果可以的话,给个Star呗!)

邮箱:lin-mt@outlook.com

目录

推荐序

前言

致谢


第一章 引言


第二章 创建和销毁对象

  本章涉及创建和销毁对象,包括何时以及如何创建它们,何时以及如何避免创建它们,如何确保它们被及时销毁,以及如何管理在销毁之前必须进行的清理操作。


第三章 对于所有对象都通用的方法

  尽管Object是一个具体类,但是设计它主要是为了扩展。它所有的非final方法(equals、hashCode、toString、clone和finalize)都有明确的通用约定(general contracts),因为它们被设计成是要被重写(override)的。任何一个类,它在覆盖这些方法的时候,都有责任遵守这些通用约定;如果做不到这一点,其他依赖于这些约定的类(例如HashMap和HashSet)就无法结合该类一起正常运作。

  本章将讲述何时以及如何覆盖这些非final的Object方法。本章不再讨论finalize方法,因为第7项已经讨论过这个方法了。而Comparable.compareTo虽然不是Object方法,但是本章也对它进行讨论,因为它具有类似的特征。


第四章 类和接口

  类和接口是Java程序设计语言的核心,他们也是Java语言的基本抽象单元。Java语言提供了许多强大的基本元素,供程序猿来设计类和接口。本章包含的一些指南可以帮助你充分利用这些元素,以便让你编写的类和接口可用、健壮且灵活。


第五章 泛型

  Java 1.5发行版本中增加了泛型(Generic)。在没有泛型之前,从集合中读取到的每一个对象都必须进行转换。如果有人不小心插入了类型错误的对象,在运行时进行转换处理就会出错。有个泛型,可以告诉编译器每个集合中接收哪些对象类型。编译器自动地为你的插入进行转化,并在编译时告知是否插入了类型错误的对象。这样可以使程序既更加安全,也更加清楚,但是这些好处(不仅仅针对集合)是需要付出代价的。本章将告诉您如何最大化利益并最大限度地减少并发症【使用泛型带来的坏处】(complications)。


第六章 枚举和注解

  Java支持两种特殊用途的引用类型:一种称为枚举(enum type)类型,以及一种称为注解类型(annotation type)的接口。本章讨论使用这些类型系列的最佳实践。


第七章 Lambda和Stream

  在Java 8中,添加了函数接口,lambda和方法引用,以便更容易地创建函数对象。在这些语法(language)更改的同时添加进了流API,以便为处理数据元素序列提供支持的库。在本章中,我们将讨论如何充分利用这些工具。


第八章 方法

  本章讨论了方法设计的几个方面:如何处理参数和返回值,如何设计方法签名以及如何为方法编写文档。本章中的大部分内容适用于构造函数和方法。与第4章一样,本章重点介绍可用性,健壮性和灵活性。


第九章 通用编程

  本章主要讨论Java语言的具体细节,讨论了局部变量、控制结构、类库、数据类型,以及两种不是由语言本身提供的机制(reflection和native method,反射机制和本地方法)。最后讨论了优化和命名惯例。


第十章 异常

  在最通常情况下,异常可以提高程序的可读性,可靠性和可维护性。如果使用不当,可能会产生相反的效果。本章提供有效使用异常的指南。


第十一章 并发

  线程(THREADS)机制允许同时进行多个活动。并发编程要比单线程编程要困难得多,因为有很多东西可能出错,也很难重现失败。你无法避免并发。它本来就存在Java平台中了,如果你要从多核处理器中获得更好的性能,并发也是一个必要条件,这些现在都是十分普遍的了。本章阐述的建议可以帮助你编写出清晰、正确、文档组织良好的并发程序。


第十二章 序列化

  本章关注对象序列化(object serialization) ,它是一个Java的框架,用来将对象编码为字节流(序列化(serializing)),并从其编码中重构对象(反序列化(deserializing))。一旦对象被序列化,其编码可以从一个VM发送到另一个VM或存储在磁盘上以便以后反序列化。本章重点介绍如何将序列化的危险最小化。


附录 与第2版中项目的对应关系

参考文献

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