Problem of Java7 in MATLAB-R2007b

[pancho_hideboo]

Shipped Version of Java Runtime Environment for MATLAB-R2007b is Java6.
However I would like to use Java7.
My operating System is Windows-7.

I can set Java7 as Runtime Environment like following.

MATLAB Version 7.5.0.342 (R2007b)
MATLAB License Number: 999999
Operating System: Microsoft Windows Vista Version 6.1 (Build 7601: Service Pack 1)
Java VM Version: Java 1.6.0 with Sun Microsystems Inc. Java HotSpot(TM) Client VM mixed mode

MATLAB Version 7.5.0.342 (R2007b)
MATLAB License Number: 999999
Operating System: Microsoft Windows Vista Version 6.1 (Build 7601: Service Pack 1)
Java VM Version: Java 1.7.0_65 with Oracle Corporation Java HotSpot(TM) Client VM mixed mode

Here I can launch MATLAB Desktop, Simlink without any problem.

But both Figure of MATLAB and Scope of Simulink Windows are blank.
without any error.
And to be strange, graph is surely drawn, I can confirm it when print them.
Just no display on screen.

I think there are some problems in Java7 for MATLAB-R2007b.

What problem could be for non-displaying of Figure of MATLAB and Scope of Simulink ?