Proxy pattern: differenze tra le versioni

Versione delle 13:24, 11 giu 2008

Versione delle 13:26, 11 giu 2008

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==Esempi==

===Virtual proxy (in Java)===

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TheIl followingseguente esempio [[Java (programminglinguaggio languagedi programmazione)|Java]] exampleillustra illustratesil thepattern "virtual proxy" pattern. The programL's output isdel programma è:

Loading HiRes_10MB_Photo1

Displaying HiRes_10MB_Photo1

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Displaying HiRes_10MB_Photo2

<!--The <code>ProxyImage</code> class is used to delay the expensive operation of loading a file from disk until the result of that operation is actually needed. If the file is never needed, then the expensive load has been totally eliminated. -->

<source lang="java">

import java.util.*;