Java basics: 4. Three Java versions

 

Java versions: http://blog.csdn.net/javaeeteacherjavaplatform: Java SE, Java me, and Java ee. Java SE, short for Java platform and Standard Edition. Java applications that can be developed and deployed on desktops and servers, as well as embedded and real-time systems. What we usually call Java is Java SE. Includes the basic syntax of Java, the object-oriented features of Java, a large number of basic functions, such as exception handling, concurrency control, Java security, swing, 2d, network programming, JDBC (Database Access), RMI (remote method call), and JNDI (named Directory Service Interface. Java me, short for Java platform and Micro Edition. Provides stable runtime environments for Java applications running on mobile devices or other embedded devices, such as mobile phones, PDAs, and printers. Java me includes flexible user interfaces, high security, built-in network protocols, and support for dynamic download of wired and wireless applications. Java me-based applications can be used on multiple devices. Java EE, short for Java platform and Enterprise Edition. Based on Java SE, It is an industrial standard for implementing enterprise-level SOA (Service-Oriented Architecture) and next-generation Web applications. Because it is a standard, it usually requires an application server to run Java enterprise-level applications. This standard defines many components and services, such as JSP, Servlet, EJB, JSF, JPA, JMS, and JTA. This Standard specifies how users implement these components and use these services, and also specifies how service providers provide these services. JSP is actually web application development in javaee. Last Lecture: Third, the key feature of Java-cross-platformNext Lecture: Fifth, the basic process of developing Java applications

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