Java: Overview

> Different version differences>> J2SE>>> Standard Edition>>> primarily for developing clients>>> contains core class libraries for Java, such as database connection, interface definition, input/output, network programming>> Java>>> Enterprise Edition>>> primarily for development sites>>> JSP is part of it>>> classes that contain J2SE and classes for developing enterprise-class applications>> J2ME>>> Mini Version>>> is mainly used for the development of embedded systems and mobile platforms.>>> contains only a subset of the classes in J2SE>> Java5.0 Three versions renamed to Java SE, Java EE, Java ME > Java API documentation>> Entrance Address: Http://www.oracle.com/technetwork/java/api > Java Common Package>> Java.lang Basic class>> Java.util The package includes a collection framework, legacy collection classes, event models, date and time implementations,internationalization and various utility classes (string tag generator, random number generator, and bit array)>> java.io provides system input and output via file system, data stream and serialization>> java.net provides classes for network applications and development>> java.sql provides access to and processing of data APIs stored in a data source (typically a relational database) using the Java language>> java.awt and javax.swing provide a class for GUI design and development>> Java.text provides classes and interfaces for working with text, dates, numbers, and messages in a natural language-neutral way > Jdk:http://www.oracle.com/technetwork/java/javase/downloads> Eclipase:http://www.eclipse.org/downloads

Java: Overview