FULL PRODUCT VERSION :
java version "1.7.0_04"
Java(TM) SE Runtime Environment (build 1.7.0_04-b20)
Java HotSpot(TM) 64-Bit Server VM (build 23.0-b21, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]
Win 7 64 bit

A DESCRIPTION OF THE PROBLEM :
When "v" is pressed in the Java Console (when running a Java Web Start application), instead of displaying the thread stack - "null" is displayed.

This is Bug 7070519 which was incorrectly closed as working in Java 7u4 - it is NOT fixed. (seems there is no way to reopen bugs?)

REGRESSION. Last worked in version 6u31

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Launch a JNLP app (e.g. from the Java Tutorial - http://download.oracle.com/javase/tutorial/uiswing/components/button.html)

I used the following:
http://download.oracle.com/javase/tutorialJWS/uiswing/components/ex6/ButtonDemo.jnlp

With the Java Console displayed press "v"
(other options seem to work fine)

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Expect the thread stack to be output
ACTUAL -
Java Web Start 10.4.1.255
Using JRE version 1.7.0_04-b20 Java HotSpot(TM) 64-Bit Server VM
User home directory = C:\Users\david.bigham
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
m: print memory usage
o: trigger logging
p: reload proxy configuration
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
0-5: set trace level to <n>
----------------------------------------------------
Dump thread stack ...
----------------------------------------------------
null
----------------------------------------------------
Done.

REPRODUCIBILITY :
This bug can be reproduced always.