ConnectToFrontEnd[] establishes a link to the notebook front end for use by the UseFrontEnd[] function.

Constructors[javaclass] returns a list of the Java declarations for all constructors of the specified JavaClass. Constructors["classname"] lists the constructor for the named ...

DoModal[] does not return until the Java side sends an expression of the form EvaluatePacket[EndModal[args]].

EndJavaBlock[] ends an evaluation block equivalent to a JavaBlock, except that it works across a larger span than the evaluation of a single expression.

EndModal[] is the head of an expression sent by Java to signal the end of a DoModal[] loop.

Fields[javaclass] returns a list of the Java declarations for all fields of the specified JavaClass. Fields["classname"] lists the fields for the named class. ...

FrontEndLink[] returns the link to the front end that will be used by UseFrontEnd[].

FrontEndSharedQ[link] returns True if the front end is being shared with a specified link, and returns False otherwise.

GetClass[javaobject] returns the JavaClass that identifies the object's class.

GetComplexClass[] returns the Java class used for complex numbers sent from, and returned to, Mathematica.