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A JavaBean is "just" a Java Object which is part of some application for the end-user.
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JavaBeans implement the JDK1.1 event linkage mechanism for exchanging changes in values of properties and hence invoking responses to these changes.
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JavaBeans implement JDK1.1 Object Serialization to represent JavaBeans in "databases" (disk files) and hence define JavaBeans as persistent objects
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JavaBeans do not need to implement any particular class or interface.
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Rather there are a set of naming conventions called the "JavaBean Framework" or "Design Patterns"
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These patterns are "discovered" automatically by the "introspection" capability of the reflection API in Java which is invoked by the BeanBox
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