isCollection() - JPA Attribute's method

Method
javax.persistence.metamodel.Attribute
boolean isCollection()

Is the attribute collection-valued (represents a Collection, Set, List, or Map).
Returns:
boolean indicating whether the attribute is collection-valued
Since:
JPA 2.0
This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
ObjectDB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.