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JavaTM 2 Platform Standard Ed. 5.0  | 
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| Packages that use Observable | |
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| 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 | 
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| Methods in java.util with parameters of type Observable | |
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 void | 
Observer.update(Observable o,
       Object arg)
This method is called whenever the observed object is changed.  | 
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JavaTM 2 Platform Standard Ed. 5.0  | 
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