Author | Rambling Programming
This article is reprinted with permission from Rambling Programming (ID: mhcoding)
Recently, Jrebel published a 2020 Java ecosystem report, which focuses on technology used by developers in the development process.
This report contains a programming language technicians are used, application architecture, application servers, runtime platform, framework technology, IDE, JRE / JDK version, database, deployment models, build tools and virtualization tools.
I compiled this report (report address: https: //www.jrebel.com/blog/2020-java-technology-report), as you analyze the following conclusions.
Java 8 gives users the most
58% of respondents said they chose to use as the programming language Java 8 in the main application. Followed by Java 11, 23% of respondents. The two versions of the more popular, largely because they are Oracle announced two versions of the long-term support.
It is noteworthy, and 7% of respondents still use Java 7 or earlier.
Only 6% of respondents use Java 12 or later.
Kotlin and JavaScript use is lowest, 3% and 2%, respectively.
Tomcat is still the most popular application server
Survey results show that more than half of the developers who use the main application server or Tomcat, accounting for 61%, five times the second Jetty.

SpringBoot uncontested
Spring Boot has been a preferred Java framework. This is largely due to the popularity in recent years, micro-services. Accounting for 82% of users choose to use SpringBoot, it can be said that the current all the other run-time platforms are brother!
The framework uses is still the focus
86% of the respondents use Spring, 51% of respondents used the like Hibernate, OpenJPA or EclipseLink persistence technology. 27% reported using server-side rendering technologies such as JSP, JSF, Thymeleaf, FreeMarker or GWT.
26% reported using JAX-RS or JAX-WS technology, such as Jersey, RESTEasy, CXF or Axis.
对于反应式编程框架，11%的受访者表示使用了Vert等技术。
注解多于xml配置
对于框架配置上，大多数人都是使用注解或者xml配置，这二者的比例相差不多。
其中使用注解的用户占比67.92%，使用xml配置的占比67.17%，但是相信未来这个差距会越来越大。

Intellij IDEA 击败 Eclipse
在使用的IDE方面，82%的受访者使用IntelliJ IDEA，很明显，这个付费IDE非常值得一试，当然社区版也是很不错的。
排名第二的是老牌IDE的是Eclipse，占24%。
这二者目前在国内都有很多人使用，在笔者所在的公司，还是IDEA的使用者多于Eclipse的。不知道你在使用哪个呢？
PostgreSQL 和Oracle数据库更受欢迎
被问及使用最多的数据库是哪个，得到的答案是最受欢迎的是PostgreSQL (47%)， Oracle DB紧随其后(42%)。其次是MySQL, 28%的受访者报告使用情况。MongoDB排名第四，有12%的受访者。
是时候换Gradle了？
对于构建工具，不出所料，Maven和Gradle是最常用的工具。
调查发现，47%的受访者使用Gradle作为其主要应用程序的构建工具，44%的受访者使用Maven。
Gradle超过Maven也许是因为它更受广大移动开发领域的开发者的青睐。
Docker与K8S争霸
开发人员使用哪些虚拟化工具？
最常用的工具是Docker，占74%。Kubernetes是第二大最受欢迎的虚拟化工具，占35%，这显示了Kubernetes在过去几年的持续增长。
随着Kubernetes的成长，相信未来几年，它就可以在市场中占据主导。
微服务改变了技术圈
通过这份报告，我们可以看到结果在很大程度上收到了微服务应用的影响。
而且，随着越来越多的公司将继续过渡到并创建基于微服务的应用程序，相信未来技术人员的技术选型上和微服务有关的技术将会更受欢迎！
以上，这份国外出炉的报告，你认为适合中国国情吗？如果是你，你都将怎样选择呢？
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