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所在平台: Udemy |
课程主页: https://www.udemy.com/course/java-fpg/
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课程名称：高级课程-大师班 - Java 概述： Java 编程语言最初由太阳微系统公司（Sun Microsystems）开发，由詹姆斯·高斯林（James Gosling）发起，并于1995年作为太阳微系统公司的 Java 平台的核心组件发布（Java 1.0 [J2SE]）。Java 标准版的最新版本为 Java SE 8。随着 Java 的不断进步和广泛的流行，出现了多个配置以适应各种类型的平台，例如：企业应用程序的 J2EE 和移动应用程序的 J2ME。新的 J2 版本被重新命名为 Java SE、Java EE 和 Java ME。Java 的核心特性是“一次编写，处处运行”。 Java 的特点： - 面向对象：Java 中的一切都是对象，基于对象模型，使得 Java 容易扩展。 - 平台无关：Java 编译后的代码不是特定于某个平台的机器代码，而是平台无关的字节码，可在不同平台上运行。 - 简单：设计上旨在易于学习，理解面向对象的基本概念之后易于掌握。 - 安全：Java 的安全特性使其能够开发无病毒、无篡改的系统，基于公钥加密的认证技术。 - 架构中立：Java 编译器生成的对象文件格式架构中立，使得编译后的代码可在多种处理器上执行。 - 可移植：由于架构中立并且没有实现依赖性，Java 是可移植的。 - 稳定：Java 强调编译时和运行时的错误检查，以消除易出错的情况。 - 多线程：Java 支持多线程特性，使得可以编写同时执行多任务的程序，实现流畅的交互式应用。 - 解释性：Java 字节码即时转换为本地机器指令，支持快速的开发和分析过程。 - 高性能：借助即时代码编译器，Java 实现高性能。 - 分布式：Java 设计用于互联网的分布式环境。 - 动态：Java 被认为比 C 或 C++ 更加动态，能够适应不断变化的环境，程序可以携带大量运行时信息以供对象访问验证和解决使用。 课程大纲：无 此课程旨在深入探索 Java 编程语言的高级特性，适合希望提升编程技能的学员，通过学习，学员将能够掌握 Java 的复杂特性和应用，满足现代开发的需求。
Java programming language was originally developed by Sun Microsystems which was initiated by James Gosling and released in 1995 as core component of Sun Microsystems' Java platform (Java 1.0 [J2SE]).The latest release of the Java Standard Edition is Java SE 8. With the advancement of Java and its widespread popularity, multiple configurations were built to suit various types of platforms. For example: J2EE for Enterprise Applications, J2ME for Mobile Applications.The new J2 versions were renamed as Java SE, Java EE, and Java ME respectively. Java is guaranteed to be Write Once, Run Anywhere.Java is −Object Oriented − In Java, everything is an Object. Java can be easily extended since it is based on the Object model.Platform Independent − Unlike many other programming languages including C and C++, when Java is compiled, it is not compiled into platform specific machine, rather into platform independent byte code. This byte code is distributed over the web and interpreted by the Virtual Machine (JVM) on whichever platform it is being run on.Simple − Java is designed to be easy to learn. If you understand the basic concept of OOP Java, it would be easy to master.Secure − With Java's secure feature it enables to develop virus-free, tamper-free systems. Authentication techniques are based on public-key encryption.Architecture-neutral − Java compiler generates an architecture-neutral object file format, which makes the compiled code executable on many processors, with the presence of Java runtime system.Portable − Being architecture-neutral and having no implementation dependent aspects of the specification makes Java portable. Compiler in Java is written in ANSI C with a clean portability boundary, which is a POSIX subset.Robust − Java makes an effort to eliminate error prone situations by emphasizing mainly on compile time error checking and runtime checking.Multithreaded − With Java's multithreaded feature it is possible to write programs that can perform many tasks simultaneously. This design feature allows the developers to construct interactive applications that can run smoothly.Interpreted − Java byte code is translated on the fly to native machine instructions and is not stored anywhere. The development process is more rapid and analytical since the linking is an incremental and light-weight process.High Performance − With the use of Just-In-Time compilers, Java enables high performance.Distributed − Java is designed for the distributed environment of the internet.Dynamic − Java is considered to be more dynamic than C or C++ since it is designed to adapt to an evolving environment. Java programs can carry extensive amount of run-time information that can be used to verify and resolve accesses to objects on run-time.
