Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Uses of Class java.util.Observable - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Edition

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Uses of Class
java.util.Observable

Packages that use Observable
java.util	Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).

Uses of Observable in java.util

Methods in java.util with parameters of type Observable

void Observer.update(Observable o, Object arg)
This method is called whenever the observed object is changed.