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Encyclopedia > Java Metadata Interface

Java Metadata Interface or JMI is a platform neutral specification that defines the creation, access, storage, lookup and exchange of metadata. The JMI specification was defined by JSR 040. Metadata is data about data. ...


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Frequently Asked Questions (1072 words)
Examples of metadata include database schema, the meaning of object attributes and methods in a Java class, XML DTDs and Schemas, and UML models.
A: The models of metadata used by JMI are created using MOF, which uses a subset of the UML notation to describe a few basic abstractions.
A: Given a MOF-compliant metadata model, a Java API that precisely reflects the model's structure is automatically generated by JMI.
Linguaggio di programmazione Java: Tutte le informazioni su Linguaggio di programmazione Java su Encyclopedia.it (1264 words)
Java tende ad essere più ad alto livello di altri linguaggi simili (come il C++); questo comporta carenze in alcune caratteristiche come i tipi di dati specifici, puntatori alla memoria di basso livello e metodi di programmazione come il sovraccaricamento degli operatori.
Il linguaggio Java separa l'ereditarietà del tipo dall'implementazione, permettendo l'ereditarietà multipla dei tipi attraverso le interfacce.
Java supporta solo la singola ereditarietà di classi, ma permette l'ereditarietà multipla di interfacce.
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