Apache Struts 2 Documentation > Home > Guides > Core Developers Guide > Annotations > Key Annotation
#editReport()

Sets the Key for type conversion.

Usage

The Key annotation must be applied at field or method level.

Parameters

Parameter Required Default Description
value no java.lang.Object.class The key property value.

Examples

// The key property for User objects within the users collection is the <code>userName</code> attribute.
@Key( value = java.lang.Long.class )
private Map<Long, User> userMap;