EndModal[] is the head of an expression sent by Java to signal the end of a DoModal[] loop.
GetComplexClass[] returns the Java class used for complex numbers sent from, and returned to, Mathematica.
JavaBlock[expr] causes all new Java objects returned to Mathematica during the evaluation of expr to be released when expr finishes. It is an error to refer to such an object ...
JavaUILink[] returns the MathLink LinkObject used by calls to Mathematica that originate from Java user-interface actions, or Null if no such link is present.
KeepJavaObject[object] causes the specified object or objects not to be released when the current JavaBlock ends. KeepJavaObject[object, Manual] causes the specified object ...
LoadedJavaClasses[] returns a list of the classes currently loaded into Java by Mathematica.
ReturnAsJavaObject[expr] causes a Java method call or field access during the evaluation of expr to return its result as an object reference (a JavaObject expression), not a ...
NETBlock[expr] causes all new .NET objects returned to Mathematica during the evaluation of expr to be released when expr finishes.
NETUILink[] returns the MathLink LinkObject used by calls to Mathematica that originate from .NET user-interface actions, or Null if no such link is present.
ReleaseCOMObject[obj] releases COM resources held by the specified .NET object.