FULL PRODUCT VERSION :
java version "1.9.0-ea"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b30)
Java HotSpot(TM) Client VM (build 1.9.0-ea-b30, mixed mode, sharing)


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
The access to clipboard crashes. Copy-paste from java to windows does not work.
Exception in thread "main" java.lang.InternalError: Default flavor mapping not found
at java.awt.datatransfer.SystemFlavorMap.initSystemFlavorMap(SystemFlavorMap.java:205)
at java.awt.datatransfer.SystemFlavorMap.getNativeToFlavor(SystemFlavorMap.java:107)
at java.awt.datatransfer.SystemFlavorMap.nativeToFlavorLookup(SystemFlavorMap.java:369)
at java.awt.datatransfer.SystemFlavorMap.getFlavorsForNative(SystemFlavorMap.java:607)
at sun.awt.datatransfer.DataTransferer.getFlavorsForFormatsAsSet(DataTransferer.java:487)
at sun.awt.datatransfer.SunClipboard.formatArrayAsDataFlavorSet(SunClipboard.java:344)
at sun.awt.datatransfer.SunClipboard.isDataFlavorAvailable(SunClipboard.java:186)
at x.X.main(X.java:12)

the code in SystemFlavorMap expects file flavormap.properties in "/sun/datatransfer/resources/":

InputStream is = SystemFlavorMap.class.getResourceAsStream("/sun/datatransfer/resources/flavormap.properties");

while the JDK actually stores this file in C:\Java\jdk1.9\jre\lib\resources.jar!\sun\awt\datatransfer\flavormap.properties

REGRESSION. Last worked in version 8u20

ADDITIONAL REGRESSION INFORMATION:
java version "1.9.0-ea"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b30)
Java HotSpot(TM) Client VM (build 1.9.0-ea-b30, mixed mode, sharing)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run following:
package x;

import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;

public class X {
    public static void main(String[] args) {
        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        clipboard.isDataFlavorAvailable(DataFlavor.stringFlavor);
    }
}

It crashes with exception:
Exception in thread "main" java.lang.InternalError: Default flavor mapping not found
at java.awt.datatransfer.SystemFlavorMap.initSystemFlavorMap(SystemFlavorMap.java:205)
at java.awt.datatransfer.SystemFlavorMap.getNativeToFlavor(SystemFlavorMap.java:107)
at java.awt.datatransfer.SystemFlavorMap.nativeToFlavorLookup(SystemFlavorMap.java:369)
at java.awt.datatransfer.SystemFlavorMap.getFlavorsForNative(SystemFlavorMap.java:607)
at sun.awt.datatransfer.DataTransferer.getFlavorsForFormatsAsSet(DataTransferer.java:487)
at sun.awt.datatransfer.SunClipboard.formatArrayAsDataFlavorSet(SunClipboard.java:344)
at sun.awt.datatransfer.SunClipboard.isDataFlavorAvailable(SunClipboard.java:186)
at x.X.main(X.java:12)



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
no exception
ACTUAL -
exception

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.lang.InternalError: Default flavor mapping not found
at java.awt.datatransfer.SystemFlavorMap.initSystemFlavorMap(SystemFlavorMap.java:205)
at java.awt.datatransfer.SystemFlavorMap.getNativeToFlavor(SystemFlavorMap.java:107)
at java.awt.datatransfer.SystemFlavorMap.nativeToFlavorLookup(SystemFlavorMap.java:369)
at java.awt.datatransfer.SystemFlavorMap.getFlavorsForNative(SystemFlavorMap.java:607)
at sun.awt.datatransfer.DataTransferer.getFlavorsForFormatsAsSet(DataTransferer.java:487)
at sun.awt.datatransfer.SunClipboard.formatArrayAsDataFlavorSet(SunClipboard.java:344)
at sun.awt.datatransfer.SunClipboard.isDataFlavorAvailable(SunClipboard.java:186)
at x.X.main(X.java:12)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package x;

import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;

public class X {
    public static void main(String[] args) {
        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        clipboard.isDataFlavorAvailable(DataFlavor.stringFlavor);
    }
}

---------- END SOURCE ----------