FULL PRODUCT VERSION :
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b34)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b34, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows XP Professional SP2

A DESCRIPTION OF THE PROBLEM :
When calling the method deriveFont(Map<? extends Attribute, ?> attributes), in some cases a NullPointerException gets thrown.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached code



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Code runs through without problems
ACTUAL -
NPE in method merge() of class sun.font.AttributeValues

ERROR MESSAGES/STACK TRACES THAT OCCUR :
C:\Dokumente und Einstellungen\Jan\Desktop>java -cp "C:\Dokumente und Einstellun
gen\Jan\Eigene Dateien\development\java\projekte\Mahou\classes" com.incors.swing
.text.editor.JTextEditor
java.lang.NullPointerException
        at sun.font.AttributeValues.merge(Unknown Source)
        at sun.font.AttributeValues.merge(Unknown Source)
        at java.awt.Font.deriveFont(Unknown Source)
        at com.BugTest.main(BugTest.java:16)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.*;
import java.awt.font.TextAttribute;
import java.util.Map;

public class BugTest {

  public static void main(String[] args) {
    Font font = new Font("Name", Font.PLAIN, 12);
    Font font2 = new Font("Name", Font.PLAIN, 11);
    Map map = font2.getAttributes();
    map.remove(TextAttribute.WEIGHT);
    font.deriveFont(map);
  }

}
---------- END SOURCE ----------

Release Regression From : 5.0
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.
###@###.### 2005-05-03 16:57:53 GMT