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• Pluggable framework architecture that allows request lifecycles to be customized for each action.
• Flexible validation framework that allows validation rules to be decoupled from action code.
• Hierarchical approach to internationalization that simplifies localizing applications.
• Automatic type conversion that transparently maps values from HTTP to native Java data objects, solving one of the most tedious efforts when creating web applications.
• Integrated dependency injection engine that manages component lifecycle and dependencies. (By default, the framework utilizes Spring for dependency injection.)
• Modular configuration files that use packages and namespaces to simplify managing large projects with hundreds of actions.
• Java 5 annotations that reduce configuration overhead. (Java 1.4 is the minimum platform.)

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