An XML element attribute is a tag property that adds additional information to XML data. You can use the Java JDOM classes to read the XML data including the element's attribute property.

Because Groovy really is Java, Groovy can make use of the plethora of XML handling APIs for Java. However, Groovy can and does go beyond this and provides even easier-to-use APIs for XML manipulation.

What is the persistence.xml file? When a developer bootstraps a JPA-based application, the framework searches for the persistence.xml file in a folder named META-INF somewhere on the JVM's classpath.