May 2025
Intermediate to advanced
552 pages
7h 22m
Chinese
Content preview from 学习 Java，第 6 版
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术语表
- 摘要
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abstract关键字用于声明抽象方法和类。抽象方法没有定义实现；它的参数和返回类型的声明与往常一样，但用大括号括起来的主体用分号代替。抽象方法的实现由定义该方法的类的子类提供。如果抽象方法出现在一个类中，该类也是抽象的。试图实例化抽象类将在编译时失败。 - 注释
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元数据使用 @ 标记语法添加到 Java 源代码中。编译器或运行时可使用注释来增强类、提供数据或映射，或标记附加服务。
- 蚂蚁
-
一种较老的基于 XML 的 Java 应用程序构建工具，。Ant 构建可以编译、打包和部署 Java 源代码，并通过可插拔的 "目标 "生成文档和执行其他活动。
- 应用编程接口 (API)
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API 包含程序员在应用程序中使用组件或工具时使用的方法和变量。Java 语言 API 由
java.lang,java.util,java.io,java.text, 和java.net包以及其他许多包的类和方法组成。 - 应用
-
独立运行的 Java 程序，与 applet 相比。
- 注释处理工具 (APT)
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Java 编译器的前端，通过可插拔的工厂架构处理注释，允许用户实现自定义编译时注释。
- 论断
-
语言的一种功能，用于测试程序逻辑应保证的条件。如果断言检查的条件为假，就会产生致命错误。为了提高性能，在部署应用程序时可以禁用断言。
- 原子
-
离散或事务性，即操作作为一个单元以全有或全无的方式发生。Java 虚拟机（VM）中的某些操作和 Java 并发 API 提供的操作是原子操作。
- 抽象窗口工具包（AWT）
-
Java 的原创的平台无关窗口、图形和用户界面工具包。
- Boojum
-
神秘的、幽灵般的、斯纳克的另一个自我。出自 1876 年刘易斯-卡罗尔的诗歌 "猎杀云雀"。
- 布尔型
-
原始 Java 数据类型，包含
true或false值。 - 界线
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在Java 泛型中，是对类型参数类型的限制。上界指定一个类型必须扩展（或可赋值给）一个特定的 Java 类。下限用于表示类型必须是指定类型的超类型（或可从指定类型赋值）。
- 拳击
-
在 Java 中用其对象包装类型对原始类型进行包装。另请参阅开箱。
- 字节
-
原始 Java 数据类型，是一个 8 位两位补码有符号数。
- 回调
-
行为，由一个对象定义，然后在特定事件发生时由另一个对象调用。Java 事件机制就是一种回调。
- 铸造
-
将 Java 对象的表观类型从一种类型更改为另一种指定类型。Java 编译器和运行时都会静态检查 Java 的类型转换。
- 捕捉
-
Java
catch语句在try语句之后引入一个异常处理代码块。catch关键字后面是括号中的一个或多个异常类型和参数名称对，以及大括号中的代码块。 - 证书
-
电子文档，使用数字签名来证明个人、团体或组织的身份。证书证明个人或团体的身份，并包含该组织的公开密钥。证书由证书颁发机构用数字签名签署。
- 证书颁发机构
-
受委托签发证书的组织，采取一切必要的措施来验证其签发证书的真实身份。
- 烧焦
-
一种原始 Java 数据类型；类型为
char的变量保存一个 16 位 Unicode 字符。 - 类
-
-
在大多数面向对象编程语言中定义对象的基本单元。类是变量和方法的封装集合，这些变量和方法之间可能有访问权限。通常，类可以通过实例化产生一个对象，该对象是类的实例，拥有自己独特的数据集。
-
class关键字用于声明一个类，从而定义一个新的对象类型。
-
- 类加载器
-
类的实例
java.lang.ClassLoader，负责将 Java ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.