FULL PRODUCT VERSION :
Java(TM) SE Runtime Environment (build 1.7.0_06-ea-b19)
Java HotSpot(TM) 64-Bit Server VM (build 23.2-b08, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Darwin macmini-4002-2 11.4.0 Darwin Kernel Version 11.4.0: Mon Apr 9 19:32:15 PDT 2012; root:xnu-1699.26.8~1/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
1. Try the attached short test in GUI session in headless mode;
java -Djava.awt.headless=true GetF4NTests
2. Get the following exception:

java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at sun.awt.datatransfer.DataTransferer$1.run(DataTransferer.java:333)
    at sun.awt.datatransfer.DataTransferer$1.run(DataTransferer.java:299)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.awt.datatransfer.DataTransferer.getInstance(DataTransferer.java:345)
    at java.awt.datatransfer.SystemFlavorMap.parseAndStoreReader(SystemFlavorMap.java:392)
    at java.awt.datatransfer.SystemFlavorMap.initSystemFlavorMap(SystemFlavorMap.java:268)
    at java.awt.datatransfer.SystemFlavorMap.getNativeToFlavor(SystemFlavorMap.java:132)
    at java.awt.datatransfer.SystemFlavorMap.getNativesForFlavor(SystemFlavorMap.java:689)
    at java.awt.datatransfer.SystemFlavorMap.getFlavorsForNative(SystemFlavorMap.java:820)
    at GetF4NTests.SystemFlavorMap0016(GetF4NTests.java:20)
    at GetF4NTests.main(GetF4NTests.java:9)
Caused by: java.lang.ClassCastException: sun.awt.HeadlessToolkit cannot be cast to sun.lwawt.macosx.LWCToolkit
    at sun.lwawt.macosx.CToolkitThreadBlockedHandler.<init>(CToolkitThreadBlockedHandler.java:31)
    at sun.lwawt.macosx.CDataTransferer.<init>(CDataTransferer.java:230)
    at sun.lwawt.macosx.CDataTransferer.getInstanceImpl(CDataTransferer.java:94)
    ... 15 more
Exception in thread "main" java.awt.AWTError: Cannot instantiate DataTransferer: sun.lwawt.macosx.CDataTransferer
    at sun.awt.datatransfer.DataTransferer$1.run(DataTransferer.java:336)
    at sun.awt.datatransfer.DataTransferer$1.run(DataTransferer.java:299)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.awt.datatransfer.DataTransferer.getInstance(DataTransferer.java:345)
    at java.awt.datatransfer.SystemFlavorMap.parseAndStoreReader(SystemFlavorMap.java:392)
    at java.awt.datatransfer.SystemFlavorMap.initSystemFlavorMap(SystemFlavorMap.java:268)
    at java.awt.datatransfer.SystemFlavorMap.getNativeToFlavor(SystemFlavorMap.java:132)
    at java.awt.datatransfer.SystemFlavorMap.getNativesForFlavor(SystemFlavorMap.java:689)
    at java.awt.datatransfer.SystemFlavorMap.getFlavorsForNative(SystemFlavorMap.java:820)
    at GetF4NTests.SystemFlavorMap0016(GetF4NTests.java:20)
    at GetF4NTests.main(GetF4NTests.java:9)

Please note that this test is passed when executed in ssh session.

REPRODUCIBILITY :
This bug can be reproduced always.

Affected tests (JCK-runtime-7):
api/java_awt/datatransfer/DataFlavor/index.html#rclass[DataFlavor2010]
api/java_awt/datatransfer/SystemFlavorMap/index.html#GetF4N[SystemFlavorMap0016]
api/java_awt/datatransfer/SystemFlavorMap/index.html#GetF4N[SystemFlavorMap0018]
api/java_awt/datatransfer/SystemFlavorMap/index.html#GetF4N[SystemFlavorMap0019]
api/java_awt/datatransfer/SystemFlavorMap/index.html#SetF4N[SystemFlavorMap0026]
api/java_awt/datatransfer/SystemFlavorMap/index.html#SetN4F[SystemFlavorMap0029]
If this is a TCK-RED it MUST be fixed. I've asked for JCK (Leonid) to wrk with engineering ASAP - to further evaluate