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2020 has been less than a month away, but as of now, Java is still the world's most popular programming language. It has a huge ecosystem in the world there are more than nine million Java developers.
Although Java is not the most direct language, but you do not need to write Java programs from scratch. There are many excellent Java framework can write web and mobile applications running on the Java virtual machine, micro-services and REST api.
Since its introduction in 1995, Java has been included ESPN, SnapDeal, Alibaba, including 134,861 websites use. After 24 years of development, Java has proven it is a custom software development's top general-purpose programming language.
Java is widely used in the field of science education, finance, law and government work. In the following pie chart shows the Java usage in various industries.
This open-source Java programming language is object-oriented, designed to provide free time to write (WORA) run at any place for the application developer. This allows Java code compiled to run on all platforms that support Java.
The latest version of Java Java 13 released in September 2019. According TOIBE Index (top 25 ranked by the search engines calculated to), Java Composite Index ranked first.
As of November 2019 and November 2018, ranking various programming languages in the following table:
Java is always in the first, making it one of the most famous software programming language. Update and publish a new version of the Java a growing, competitive programming language.
For your next Web application development project simply select Java is not enough. When also need to select the appropriate Java Web framework, we need to make the right choice. Do you wonder how to choose the right framework for Java projects?
There is no doubt that the selection process is not easy. Enterprises under the designated trade selecting a specific java framework for software development is that you need to understand its advantages and disadvantages.
The following will introduce you to a small core 9 2020 Top Java framework.
Top Java framework # 1: Play
Play应用于顶级公司如LinkedIn、三星、Guardian、Verizon等，这仅说明该框架的可信度，但它还提供了所需的速度、可伸缩性和性能。
它的用户界面非常简单，移动应用程序开发人员可迅速理解。它主要用于开发需要创建连续内容的应用程序。
顶级Java框架#2: JavaServer Faces
该Java框架由甲骨文公司开发，可用于创建企业应用程序、本机应用程序，和Web应用程序开发。它的一大优势在于，能够将表示层与应用程序代码轻松连接。
它提供了一个API集，用于表示和管理UI组件。它具有清晰的体系结构，可区分应用程序逻辑和表示形式。JSF并未使用Java，而是使用XML进行视图处理。
顶级Java框架#3: Google web Toolkit
该框架用于Javascript之类的客户端开发，是一个开放源Java框架，这意味着它是免费的。Google广泛使用此框架，并且使用该框架编写了Google产品，例如AdSense、Google电子钱包和AdWords。
借助GWT代码可轻松开发和调试Ajax应用程序。Java开发人员更喜欢这种框架编写复杂的应用程序。GWT的功能包括：标记书签、跨浏览器可移植性、历史记录和管理。
顶级Java框架#4: Spring
该框架排名第一，因为它性能出色，可开发复杂的Web应用程序，而这些应用程序也以高性能著称。它使Java开发人员能够轻松地创建企业级应用程序。
Web应用程序开发人员可以为Spring框架性能做担保，spring也因此成为Java开发人员最爱的框架。以下统计数据可以证明这一观点，这是开发人员（选择Java作为其三大首选编程语言之一）对Java框架的评价：
在开发人员的选择中，Spring MNV和Spring Boot领先于其他Java技术。对于开发人员而言，它们的一大优势在于可以解放其他模块，并专注于spring采用的控制反转（IoC）。
该框架的其他优势在于全面的配置模型、支持传统的数据库和NoSQL等现代数据库，并通过支持面向切面编程来进行统一开发。它提供了一些模块，例如Spring MVC、Spring Core、Spring Boost、SpringTransaction等。
顶级Java框架#5: Struts
该框架可帮助定制软件开发人员创建易于维护的企业级应用程序。此框架的USP是插件，它们是JAR软件包，这意味着它们是可移植的。
Hibernate插件和spring插件可以分别用于对象关系映射和依赖注入。这些框架提供了结构良好的Java、JSP和Action类，因此使用它们进行应用程序开发可以减少处理时间。
顶级Java框架 #6: Vaadin
Vaadin是一个伟大的平台，用于简化Java开发，可以使用它来获取定制Web开发服务。该框架的一大优势在于服务器与浏览器之间的通信流畅度。
Vaadin提供了从Java虚拟机直接访问文件物件模型（DOM）的功能。在最新版本中，它已分为两部分。Vaadin Flow是一个轻量级的框架，用于服务器端通信和路由。
顶级Java框架 #7: Grails
该开源框架在企业级Java Beans中非常流行。它可用于为内容管理系统、Restful Web服务和电子商务站点创建不断更新且可扩展的应用程序。
它可以与其他Java技术（例如Java Spring、Hibernate、quartz、EE containers和SiteMesh）进行协调。其优势包括简单的GORM、灵活的配置文件、有多个插件的高级插件系统、简单的对象映射库以及一个相互支持、及时回复的社区。
顶级Java框架#8: Hibernate
作为对象关系映射（ORM）数据库，Hibernate改变了以往查看数据库的方式。尽管不是全栈框架，但它仍为转换多个数据库的数据提供了极大便利。
它支持多个数据库，无论应用程序大小或用户数量如何都可轻松扩展。同时，它运行速度快，功能强大，并且易于扩展、修改和配置。
顶级Java框架 #9: Blade
Any custom application developers can quickly understand the framework in one day. Java Blade launched in 2015, is known for its simplicity and lightweight. The framework highlights the most prominent is the ability to rapidly create Web applications.
It is a full-stack Web development framework, simple and clean coding structure. Blade-based Java 8, which provides for RESTful routing interface, it also supports webjar resources and plug-in extensions.
to sum up:
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After reading all top-level framework for Java, I hope you have a clearer understanding. Java itself is a promising programming language, without a doubt, choose the correct Java framework works wonders.
They are not to understand the challenges, but to find the frame that best suits your needs is probably the challenge!
Challenges happy!
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