Defines the default value of request meta-data that is bound using one of the following annotations: jakarta.ws.rs.PathParam, jakarta.ws.rs.QueryParam, jakarta.ws.rs.MatrixParam, jakarta.ws.rs.CookieParam, jakarta.ws.rs.FormParam, or jakarta.ws.rs.HeaderParam. The default value is used if the corresponding meta-data is not present in the request.

If the type of the annotated parameter is java.util.List, java.util.Set or java.util.SortedSet then the resulting collection will have a single entry mapped from the supplied default value.

If this annotation is not used and the corresponding meta-data is not present in the request, the value will be an empty collection for List, Set or SortedSet, null for other object types, and the Java-defined default for primitive types.