Shulou(Shulou.com)06/01 Report--

This article mainly introduces "what is the difference between the three versions of Java". In daily operation, I believe many people have doubts about the difference between the three versions of Java. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the questions of "what is the difference between the three versions of Java?" Next, please follow the editor to study!

Standard Edition (JavaSE), Enterprise Edition (JavaEE), miniature Edition (JavaME)

Standard Editor (Standard Edition) J2SE contains the classes that form the core of the Java language, targeting applications on personal computers. This version is the core of the Java platform, it provides a very rich API to develop applications on general personal computers, including user interface interfaces AWT and Swing, network functions and internationalization, image processing capabilities and input and output support. Applet, which blossomed on the Internet in the late 1990s, also belongs to this version. Applet was later replaced by Flash, and Flash was about to be replaced by HTML5. For example: database connection, interface definition, input and output, network programming and so on.

The Enterprise Editor (Enterprise Edition) JavaEE contains classes from JavaSE, as well as classes for developing enterprise applications. JavaEE is an extension of JavaSE, adding class libraries for server development. Such as: JDBC allows programmers to directly use SQL syntax in Java to access data in the database; Servlet can extend the function of the server, through the request-response mode to deal with client requests; JSP is a technology that can embed Java program code in web pages. Such as Servlet, JSP, XML, transaction control and so on.

Micro Editor (miniature version) J2ME contains a category of J2SE for software development of consumer electronics products. JavaME is an extension of JavaSE, including part of the core classes of J2SE, as well as its own extension classes, adding a class library suitable for micro devices: javax.microedition.io.* and so on. This version streamlines the core class library to meet the needs of electronic consumer products with limited resources, and provides a modular architecture that allows different types of products to increase support at any time. For example: pager, smart card, mobile phone, PDA, set-top box and so on.

Scope: J2SE is included in J2EE, and J2ME contains the core classes of J2SE, but some proprietary classes have been added.

Myth: many people begin to misunderstand that Android development is JavaME. These two are completely different content.

At this point, the study on "what is the difference between the three major versions of Java" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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