JDOHelper is a concrete class that facilitates the bootstrapping of a JDO implementation. It also provides applications with methods to interrogate the state of JDO instances. Although it contains a constructor, all of the methods it defines are static and are commonly executed on the class name directly without first obtaining a JDOHelper instance.
The UML for JDOHelper is shown in Figure 6.1.
The following methods are used to determine the state of an instance:
Returns true for persistence-capable instances that have been changed in the current transaction. ...