Title: Built-in Type Converters The following built-in types are supported for @Resource injection in EJBs via elements in a META-INF/ejb-jar.xml or via plain properties in a META-INF/env-entries.properties file. EJB 3.0 required types: - java.lang.Boolean - java.lang.Byte - java.lang.Character - java.lang.Double - java.lang.Float - java.lang.Integer - java.lang.Long - java.lang.Short - java.lang.String OpenEJB 3.0 additional types: - java.lang.Class - java.lang.Enum (any subclass of) - java.io.File - java.math.BigDecimal - java.math.BigInteger - java.net.Inet4Address - java.net.Inet6Address - java.net.InetAddress - java.net.URI - java.net.URL - java.util.ArrayList - java.util.Date - java.util.HashMap - java.util.Hashtable - java.util.IdentityHashMap - java.util.LinkedHashMap - java.util.LinkedHashSet - java.util.LinkedList - java.util.List - java.util.Map - java.util.Properties - java.util.Set - java.util.SortedMap - java.util.TreeMap - java.util.TreeSet - java.util.Vector - java.util.WeakHashMap - java.util.logging.Logger - java.util.regex.Pattern - javax.management.ObjectName - javax.naming.Context - org.apache.commons.logging.Log - org.apache.log4j.Logger To use an OpenEJB additional type in xml, simply declare it as java.lang.String and it will be converted on the fly to the field/setter type used by the bean class. For example: package org.superbiz.foo; import java.util.Date; @Stateless public class MyBean { @Resource private Date myDate; } Works with an ejb-jar.xml as follows: MyBean org.superbiz.foo.MyBean/myDate 2008-04-19 java.lang.String Or with an env-entries.properties file as follows: org.superbiz.foo.MyBean/myDate = 2008-04-19