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What (who) is JavaBeans - definition

REUSABLE SOFTWARE COMPONENTS USED IN JAVA PROGRAMMING

Java Bean; Javabean; Java Beans; Javabeans; JavaBean; Java beans; Bean (computing)

JavaBeans

<programming> 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 Sybase's PowerJ, Borland's JBuilder, IBM's Visual Age for Java, SunSoft's Java Workshop and Symantec's 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). http://javasoft.com/beans/. (1997-11-20)

Enterprise JavaBeans

<specification, business, programming> (EJB) A server-side component architecture for writing reusable business logic and portable enterprise applications. EJB is the basis of Sun's Java 2 Platform, Enterprise Edition (J2EE). Enterprise JavaBean components are written entirely in Java and run on any EJB compliant server. They are {operating system}, platform, and middleware independent, preventing vendor lock-in. EJB servers provide system-level services (the "plumbing") such as transactions, security, threading, and persistence. The EJB architecture is inherently transactional, distributed, multi-tier, scalable, secure, and {wire protocol} neutral - any protocol can be used: IIOP, JRMP, HTTP, DCOM etc. EJB 1.1 requires RMI for communication with components. EJB 2.0 is expected to require support for RMI/IIOP. EJB applications can serve assorted clients: browsers, Java, ActiveX, CORBA etc. EJB can be used to wrap {legacy systems}. EJB 1.1 was released in December 1999. EJB 2.0 is in development. Sun claims broad industry adoption. 30 vendors are shipping server products implementing EJB. Supporting vendors include IBM, Fujitsu, Sybase, Borland, Oracle, and Symantec. An alternative is Microsoft's MTS ({Microsoft Transaction Server}). http://java.sun.com/products/ejb/. FAQ (http://java.sun.com/products/ejb/faq.html). (2000-04-20)

Wikipedia

JavaBeans

In computing based on the Java Platform, JavaBeans is a technology developed by Sun Microsystems and released in 1996, as part of JDK 1.1.

The 'beans' of JavaBeans are classes that encapsulate one or more objects into a single standardized object (the bean). This standardization allows the beans to be handled in a more generic fashion, allowing easier code reuse and introspection. This in turn allows the beans to be treated as software components, and to be manipulated visually by editors and IDEs without needing any initial configuration, or to know any internal implementation details.

As part of the standardization, all beans must be serializable, have a zero-argument constructor, and allow access to properties using getter and setter methods.

https://en.wikipedia.org/wiki/JavaBeans