EJBT Design Patterns Advanced Patterns,Processes and ldioms Floyd Marinescu Wiley Computer Publishing 韧 John Wiley Sons,Inc. NEW YORK·CHICHESTER·WEINHEIM·BRISBANE·SINGAPORE·TORONTOEJB™ Design Patterns Advanced Patterns, Processes, and Idioms Floyd Marinescu Wiley Computer Publishing John Wiley & Sons, Inc. NEW YORK • CHICHESTER • WEINHEIM • BRISBANE • SINGAPORE • TORONTO