Java Diary (1)
Date: 2004-2-25
Title: Java
Note: Shui Zihua asked the source, e net feelings deeply.
One. Java
Java's origin and development history will no longer be described here, by the way, Book of books in this Java will be introduced.
Java has developed to now, according to application scores, three major blocks: J2SE, J2ME and J2EE, which is the Sun One Net Environment system. J2se is the standard version of Java2, mainly for desktop applications. J2ME is primarily applied to embedding is system development, such as mobile phones and PDA programming; J2EE is a java2 enterprise version, mainly for distributed network programs, Such as e-commerce websites and ERP systems. J2SE development desktop application compared to VC, VB, Dephi these traditional development languages, the advantage is not obvious. J2ME For beginners, it seems to be a bit deep, and general developers have difficult to develop environments. So now the most widely used and best student is J2EE. J2EE includes many components such as JSP, Servlet, JavaBean, EJB, JDBC, JavaMail, etc.
The J2EE platform consists of a set of services, Application Interface (APIs), and protocols that provide functional support for developing web-based multi-layer applications.
13 core technologies supporting J2EE: JDBC, JNDI, EJBS, RMI, JSP,
Java servlets, XML, JMS, Java IDL, JTS, JTA, JavaMail, and Jaf. This thirteenth technology is not discussed here. With the continuous deepening of learning, it will gradually understand.
