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Jingdong book

Java 完全参考手册(第8版)

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在《Java完全参考手册(第8版)》中,编程畅销书作者Herb Schildt向您展示了开发、编译、调试以及运行Java程序所需要掌握的全部知识。本书内容丰富,针对JavaSE7进行了全面更新,涵盖了Java语言的方方面面,包括语法、关键字以及基本的编程原则。此外,本书还介绍了Java API库的关键元素,分析了Java Bean、servlet、applet以及Swing,并通过真实的案例演示了Java在编程中的实际应用。在讲解的过程中,书中贯穿了JavaSE7的最新特性,例如带资源的try语句、在switch语句中使用字符串、使用菱形运算符“”的类型推断功能、NI0.2输入输出系统以及Fork/Join Framework。
Author Description

Herbert Schildt,世界顶级程序设计大师,全球顶尖编程图书作者之一。他是C、C++、Java和C#编程语言方面的权威,也是Windows编程方面的专家。他的编程书籍在全球销量已经超过300万册,并被翻译成多种语言流传于世,包括Java: The Complete Reference、C++: The Complete Reference、C: The Complete Reference等。
Catalogue

第1部分 Java语言
第1章 Java的历史和演变
1.1 Java的家世
1.1.1 现代编程语言的诞生:C语言
1.1.2 C++:下一个阶段
1.1.3 Java出现的时机已经成熟
1.2 Java的诞生
1.3 Java改变Internet的方式
1.3.1 JaVaapplet
1.3.2 安全性
1.3.3 可移植性
1.4 Java的魔力:字节码
1.5 servlet:服务器端的Java
1.6 Java的关键特性
1.6.1 简单性
1.6.2 面向对象
1.6.3 健壮性
1.6.4 多线程
1.6.5 体系结构中立
1.6.6 解释执行和高性能
1.6.7 分布式
1.6.8 动态性
1.7 Java的演变历程
1.8 文化革新
第2章 Java综述
2.1 面向对象编程
2.1.1 两种范式
2.1.2 抽象
2.1.3 00P三原则
2.2 第一个简单程序
2.2.1 输入程序
2.2.2 编译程序
2.2.3 深入分析第一个示例程序
2.3 第二个简短程序
2.4 两种控制语句
2.4.1 if语句
2.4.2 for循环
2.5 使用代码块
2.6 词汇问题
2.6.1 空白符
2.6.2 标识符
2.6.3 字面值
2.6.4 注释
2.6.5 分隔符
2.6.6 Java关键字
2.7 Java类库
第3章 数据类型、变量和数组
3.1 Java是强类型化的语言
3.2 基本类型
3.3 整型
3.3.1 byte
3.3.2 ShOrt
3.3.3 int
3.3.4 lOng
3.4 浮点型
3.4.1 noat
3.4.2 dOuble
3.5 字符型
3.6 布尔型
3.7 深入分析字面值
3.7.1 整型字面值
3.7.2 浮点型字面值
3.7.3 布尔型字面值
3.7.4 字符型字面值
3.7.5 字符串字面值
3.8 变量
3.8.1 变量的声明
3.8.2 动态初始化
3.8.3 变量的作用域和生命周期
3.9 类型转换和强制类型转换
3.9.1 Java的自动类型转换
3.9.2 强制转换不兼容的类型
3.10 表达式中的自动类型提升
3.11 数组
3.11.1 维数组
3.11.2 多维数组
3.11.3 另一种数组声明语法
3.12 关于字符串的一些说明
3.13 向C/C++程序员提供指针方面的注解
第4章 运算符
4.1 算术运算符
4.1.1 基本算术运算符
4.1.2 求模运算符
4.1.3 算术与赋值复合运算符
4.1.4 自增与自减运算符
4.2 位运算符
4.2.1 位逻辑运算符
4.2.2 左移
4.2.3 右移
4.2.4 无符号右移
4.2.5 位运算符与赋值的组合
4.3 关系运算符
4.4 布尔逻辑运算符
4.5 赋值运算符
4.6 “?”运算符
4.7 运算符的优先级
4.8 使用圆括号
……
第II部分 Java库
第III部分 使用Java开发软件
第IV部分 Java应用
Book Abstract

27.8.10深入研究
前面的讨论介绍了Fork/Join Framework的基础知识,并描述了最常用的方法。但是,Fork/Join Framework是十分丰富的框架,提供了可以进一步控制并行操作的附加功能。尽管分析所有这些主题,以及分析围绕并行编程和Fork/Join Framework的细微差别大大超出了本书的范围,但是在此将介绍一些有关Forkjoin Task和ForkjoinPool提供的其他特性的例子。
1.其他的Forkjoin Task特性举例
如前所述,invokeAll()和fork()这样的方法只能在Forkjoin Task中调用。遵守这条规则通常很容易,但是在有些情况下,可能会具有能够在任务内部或外部执行的代码。可以通过调用inForkjoinPool()方法,确定您的代码是否在任务内部执行。
可以通过Forkjoin Task定义的adapt()方法,将Runnable或Callable对象转换成Forkjoin Task对象。该方法有3种形式,一种用于转换Callable对象,另一种用于转换不返回结果的Runnable对象,组后一种用于转换返回结果的Runnable对象。对于Callable对象,运行call()方法,对于Runnable对象,运行run0方法。
可以通过调用get Queued Task Count()方法,获取调用线程的队列中任务的大概数量。可以通过调用getSurplusQueuedTaskCount0方法,获取调用线程的队列中任务数量超出池中其他线程任务数量的大约数目,其他线程可能会“挪用”多出的这些任务。请记住,在Fork/Join Framework中,任务挪用是获得高级别效率的一种方式。尽管这个过程是自动进行的,但在某些情况下,对于优化吞吐量,这一信息可能是有用的。
ForkjoinTask定义了以quitely作为前缀的方法,它们如下所示:
·final void quietlyjoin();连接任务,但是不返回结果,也不抛出异常。
·final void quietlylnvoke():调用任务,但是不返回结果,也不抛出异常。
本质上,除了不返回值以及不抛出异常外,这两个方法与它们对应的non-quiet方法相似。
……

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