1. Java archive format, filename extension> jar A compressed archive file containing Java class files, filename extension: ". jar". The Java Development Kit contains a tool called "jar" for creating . jar files, similar to the standard Unix tar command. As well as archiving and compressing the Java class files, it also inserts a "manifest" file which can contain information about the class files, such as a digital signature. Combining class files into a single archive file makes it possible to download them in a single HTTP transaction. This, and the compression, speeds up execution of Java programs delivered via the Internet. 2001-02-03 JavaBeans A component architecture for the Java programming language, developed initially by Sun, but now available from several other vendors. JavaBeans components are called "beans". JavaBeans allows developers to create reusable software components that can then be assembled together using visual application builder tools including Sybases PowerJ, Borlands JBuilder, IBMs Visual Age for Java, SunSofts Java Workshop and Symantecs Visual Cafe. JavaBeans support Introspection a builder tool can analyze how a Bean works, Customisation developers can customise the appearance and behaviour of a Bean, Events Beans can communicate, Properties developers can customise and program with Beans? and Persistence customised Beans can be stored and reused. Home http://www. javasoft. com/beans/.
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