1. JDK基础说明


版本及新特性获取

作为技术人,关注新技术必不可少,那么最佳的途径。。。看下面。

在 Oracle Java 官方站点有这个非常好的引导地图

官方站点 https://docs.oracle.com/javase/8/

主要的几点

Java 官方学习路线

Java Tutorials Learning Paths

在接下来的文章中我会按照官方推荐路线进行分析源码和思维导图(客户端的我就不关注了_,感兴趣的小伙伴自己去理解和分析源码吧)。

为了更好地理解和分析源码,我们来看下Java平台标准版的API规范中对每个包的说明。

在这里同样我会省略和客户端开发相关的数据。

Package Description 我的说明
java.util Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array). 这个家伙厉害,重要的集合框架都在这里
java.util.concurrent Utility classes commonly useful in concurrent programming. 这个前缀的家伙更厉害,高并发控制,中间件开发必须精通
java.util.concurrent.atomic A small toolkit of classes that support lock-free thread-safe programming on single variables. OK
java.util.concurrent.locks Interfaces and classes providing a framework for locking and waiting for conditions that is distinct from built-in synchronization and monitors. OK
java.util.function Functional interfaces provide target types for lambda expressions and method references. OK
java.util.jar Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file. OK
java.util.logging Provides the classes and interfaces of the JavaTM 2 platform's core logging facilities. OK
java.util.prefs This package allows applications to store and retrieve user and system preference and configuration data. OK
java.util.regex Classes for matching character sequences against patterns specified by regular expressions. OK
java.util.spi Service provider classes for the classes in the java.util package. OK
java.util.stream Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections. OK
java.util.zip Provides classes for reading and writing the standard ZIP and GZIP file formats. OK
java.lang.ref Provides reference-object classes, which support a limited degree of interaction with the garbage collector. OK
java.lang.reflect Provides classes and interfaces for obtaining reflective information about classes and objects. 反射是框架的核心,精通必不可少。
java.nio Defines buffers, which are containers for data, and provides an overview of the other NIO packages. OK
java.nio.channels Defines channels, which represent connections to entities that are capable of performing I/O operations, such as files and sockets; defines selectors, for multiplexed, non-blocking I/O operations. OK
java.nio.channels.spi Service-provider classes for the java.nio.channels package. OK
java.nio.charset Defines charsets, decoders, and encoders, for translating between bytes and Unicode characters. OK
java.nio.charset.spi Service-provider classes for the java.nio.charset package. OK
java.nio.file Defines interfaces and classes for the Java virtual machine to access files, file attributes, and file systems. OK
java.nio.file.attribute Interfaces and classes providing access to file and file system attributes. OK
java.nio.file.spi Service-provider classes for the java.nio.file package. OK
java.beans Contains classes related to developing beans -- components based on the JavaBeans architecture. OK
java.beans.beancontext Provides classes and interfaces relating to bean context. OK
java.io Provides for system input and output through data streams, serialization and the file system. OK
java.lang Provides classes that are fundamental to the design of the Java programming language. OK
java.lang.annotation Provides library support for the Java programming language annotation facility. OK
java.lang.instrument Provides services that allow Java programming language agents to instrument programs running on the JVM. OK
java.lang.invoke The java.lang.invoke package contains dynamic language support provided directly by the Java core class libraries and virtual machine. OK
java.lang.management Provides the management interfaces for monitoring and management of the Java virtual machine and other components in the Java runtime. OK
java.math Provides classes for performing arbitrary-precision integer arithmetic (BigInteger) and arbitrary-precision decimal arithmetic (BigDecimal). OK
java.net Provides the classes for implementing networking applications. OK
java.rmi Provides the RMI package. OK
java.rmi.activation Provides support for RMI Object Activation. OK
java.rmi.dgc Provides classes and interface for RMI distributed garbage-collection (DGC). OK
java.rmi.registry Provides a class and two interfaces for the RMI registry. OK
java.rmi.server Provides classes and interfaces for supporting the server side of RMI. OK
java.security Provides the classes and interfaces for the security framework. OK
java.security.acl The classes and interfaces in this package have been superseded by classes in the java.security package. 已被 java.security 包替代
java.security.cert Provides classes and interfaces for parsing and managing certificates, certificate revocation lists (CRLs), and certification paths. OK
java.security.interfaces Provides interfaces for generating RSA (Rivest, Shamir and Adleman AsymmetricCipher algorithm) keys as defined in the RSA Laboratory Technical Note PKCS#1, and DSA (Digital Signature Algorithm) keys as defined in NIST's FIPS-186. OK
java.security.spec Provides classes and interfaces for key specifications and algorithm parameter specifications. OK
java.sql Provides the API for accessing and processing data stored in a data source (usually a relational database) using the JavaTM programming language. OK
java.text Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages. OK
java.text.spi Service provider classes for the classes in the java.text package. OK
java.time The main API for dates, times, instants, and durations. OK
java.time.chrono Generic API for calendar systems other than the default ISO. OK
java.time.format Provides classes to print and parse dates and times. OK
java.time.temporal Access to date and time using fields and units, and date time adjusters. OK
java.time.zone Support for time-zones and their rules. OK
javax.annotation OK
javax.annotation.processing Facilities for declaring annotation processors and for allowing annotation processors to communicate with an annotation processing tool environment. OK
javax.lang.model Classes and hierarchies of packages used to model the Java programming language. OK
javax.lang.model.element Interfaces used to model elements of the Java programming language. OK
javax.lang.model.type Interfaces used to model Java programming language types. OK
javax.lang.model.util Utilities to assist in the processing of program elements and types. OK
javax.management Provides the core classes for the Java Management Extensions. OK
javax.management.loading Provides the classes which implement advanced dynamic loading. OK
javax.management.modelmbean Provides the definition of the ModelMBean classes. OK
javax.management.monitor Provides the definition of the monitor classes. OK
javax.management.openmbean Provides the open data types and Open MBean descriptor classes. OK
javax.management.relation Provides the definition of the Relation Service. OK
javax.management.remote Interfaces for remote access to JMX MBean servers. OK
javax.management.remote.rmi The RMI connector is a connector for the JMX Remote API that uses RMI to transmit client requests to a remote MBean server. OK
javax.management.timer Provides the definition of the Timer MBean. OK
javax.naming Provides the classes and interfaces for accessing naming services. OK
javax.naming.directory Extends the javax.naming package to provide functionality for accessing directory services. OK
javax.naming.event Provides support for event notification when accessing naming and directory services. OK
javax.naming.ldap Provides support for LDAPv3 extended operations and controls. OK
javax.net Provides classes for networking applications. OK
javax.net.ssl Provides classes for the secure socket package. OK
javax.print Provides the principal classes and interfaces for the JavaTM Print Service API. OK
javax.print.attribute Provides classes and interfaces that describe the types of JavaTM Print Service attributes and how they can be collected into attribute sets. OK
javax.print.attribute.standard Package javax.print.attribute.standard contains classes for specific printing attributes. OK
javax.print.event Package javax.print.event contains event classes and listener interfaces. OK
javax.rmi Contains user APIs for RMI-IIOP. OK
javax.rmi.CORBA Contains portability APIs for RMI-IIOP. OK
javax.rmi.ssl Provides implementations of RMIClientSocketFactory and RMIServerSocketFactory over the Secure Sockets Layer (SSL) or Transport Layer Security (TLS) protocols. OK
javax.script The scripting API consists of interfaces and classes that define Java TM Scripting Engines and provides a framework for their use in Java applications. OK
javax.security.auth This package provides a framework for authentication and authorization. OK
javax.security.auth.callback This package provides the classes necessary for services to interact with applications in order to retrieve information (authentication data including usernames or passwords, for example) or to display information (error and warning messages, for example). OK
javax.security.auth.kerberos This package contains utility classes related to the Kerberos network authentication protocol. OK
javax.security.auth.login This package provides a pluggable authentication framework. OK
javax.security.auth.spi This package provides the interface to be used for implementing pluggable authentication modules. OK
javax.security.auth.x500 This package contains the classes that should be used to store X500 Principal and X500 Private Credentials in a Subject. OK
javax.security.cert Provides classes for public key certificates. OK
javax.security.sasl Contains class and interfaces for supporting SASL. OK
javax.sql Provides the API for server side data source access and processing from the JavaTM programming language. OK
javax.sql.rowset Standard interfaces and base classes for JDBC RowSet implementations. OK
javax.sql.rowset.serial Provides utility classes to allow serializable mappings between SQL types and data types in the Java programming language. OK
javax.sql.rowset.spi The standard classes and interfaces that a third party vendor has to use in its implementation of a synchronization provider. OK
javax.tools Provides interfaces for tools which can be invoked from a program, for example, compilers. OK
javax.transaction Contains three exceptions thrown by the ORB machinery during unmarshalling. OK
javax.transaction.xa Provides the API that defines the contract between the transaction manager and the resource manager, which allows the transaction manager to enlist and delist resource objects (supplied by the resource manager driver) in JTA transactions. OK
javax.xml OK
org.w3c.dom OK

参考资料

Java官方资料

JDK API


原创声明

作者:随风浮云

出处:http://www.cnblogs.com/ljmatlight

本文版权归作者所有,欢迎转载,但未经作者同意必须保留此段声明。

文中有不妥或者错误的地方,欢迎勘误,如果你有更好的建议,可以给我留言讨论,共同进步。

互联网技术时效性较强,引用请慎重。


1. JDK基础说明的更多相关文章

  1. 使用alpine制作最小化的JDK基础镜像

    注意:这里使用的是oracle的JRE,版本是1.8. 1.解压jre包,删除根目录下文本文件,然后删除其他不必要文件. #解压 tar xvcf jre-8u161-linux-x64.tar.gz ...

  2. 【计理01组04号】JDK基础入门

    java.lang包 java.lang包装类 我们都知道 java 是一门面向对象的语言,类将方法和属性封装起来,这样就可以创建和处理相同方法和属性的对象了.但是 java 中的基本数据类型却不是面 ...

  3. jdk基础配置

    今遇到一事,tomcat启动是报错,将jdk位数错误,有问题,32位和64位的问题 cmd java -verison 显示的确实是jdk 64位,又跑到 环境变量看了下java_home的配置 这里 ...

  4. docker学习系列-jdk基础镜像制作

    准备一台安装有docker服务的机器 1.编辑Dockerfile   vim Dockerfile FROM centos:latest ADD ./jdk-8u141-linux-x64.tar. ...

  5. 【JDK基础】java基础的一些资料

    工具:https://blog.csdn.net/javazejian/article/details/72828483 类加载器:https://blog.csdn.net/X5fnncxzq4/a ...

  6. JDK基础必备面试十问

    1. new一个对象在Java内部做了哪些工作? 从静态角度来看,new一个对象表示创建一个类的对象实例. 从JVM运行角度来看,当JVM执行到new字节码时,首先会去查看类有没有被加载到内存以及初始 ...

  7. jdk基础提升

    1. treeMap,treesSet 作用:1具有对应普通的Map,Set的功能,2.能排序Map和Set  (依赖树的结构进行排序---中序循环) TreeSet<String> tr ...

  8. Visual Studio、.net framework、CLR与JDK、JRE、JVM、Eclipse

    .net平台                                        java平台 开发工具                   Visual Studio            ...

  9. 使用jdk 容器镜像注意默认编码问题

    最近在使用一个开源数据pipeline 处理的工具的时候,发现了jdk容器镜像编码的一些问题 以下是一个简单的描述 问题 使用了streamsets 工具,使用容器运行,默认使用了adoptopenj ...

随机推荐

  1. 数据可视化之PowerQuery篇(三)学会使用PowrQuery的自定义函数

    https://zhuanlan.zhihu.com/p/64415763 使用Power Query进行复杂一些的数据处理,离不开M函数,目前已经有超过700个函数了,基本上各式各样的数据处理需求都 ...

  2. 前端09 /jQuery标签操作、事件、补充

    前端09 /jQuery标签操作.事件.补充 目录 前端09 /jQuery标签操作.事件.补充 1.标签内文本操作 1.1 html标签元素中的所有内容 1.2 text 标签元素的文本内容 2.文 ...

  3. hihoCoder 1041 国庆出游 最详细的解题报告

    题目来源:国庆出游 解题思路(下面是大神的写的): 把题目中的序列称作S,树称作T.那么对于S中的任意节点x,x的子孙节点如果在S出现的话,那么这个子孙节点的位置是有一定要求的:x的所有子孙节点在S中 ...

  4. day3:强制类型转换&自动类型转换&变量缓存机制

    1.Number的强制类型转换(int,float,bool,complex) 1.int 强制转换成整形 float可以转化成int bool可以转化成int str(形如"123&quo ...

  5. 邂逅Vue.js

    1.简单认识一下Vue.js Vue (读音 /vjuː/,类似于 view),不要读错. Vue是一个渐进式的框架,什么是渐进式的呢? p渐进式意味着你可以将Vue作为你应用的一部分嵌入其中,带来更 ...

  6. Burp Suite Repeater Module - 中继模块

    目的:节省网页应用分析时间 目标对象:http://10.0.0.15/getboo/login.php 通过调整Request的参数,不断尝试,通过Response查看状态.从而节省在浏览器中操作的 ...

  7. 为啥Underlay才是容器网络的最佳落地选择

    导语: 几年前,当博云启动自研容器网络研发的时候,除了技术选型的考虑,我们对于先做 Underlay 还是 Overlay 网络也有过深度的讨论.当时的开源社区以及主流容器厂商,多数还是以 Overl ...

  8. java判断当前系统是win还是linux

    private static final boolean isWin = System.getProperty("os.name").toLowerCase().contains( ...

  9. 修改了数据库文件可以识别是否最新,按数据库文件名20181217.db,日期名作文件名时间戳

    修改了数据库文件可以识别是否最新,按数据库文件名20181217.db,日期名作文件名时间戳 压缩包device.rar上传到邮箱

  10. three.js 制作魔方

    因为之前的几节讲了一些数学方法,例如Vector3.Matrix4.Euler还有Quaternion的知识.所以这篇郭先生就来说说用three.js怎么制作一个魔方.在线案例请点击博客原文 制作魔方 ...