Java Message Stream??

I'm trying a workaround for a server logon that was written in JAVA.
The Java program is initiated from the command line (a string of jar files)
and then pops a logon screen. Rather than manually entering user ID and password I want to have my program to enter this information
into the logon textboxes.

Spy++ (Microsoft) finds the logon form, but is unable to locate any controls on the form, including textboxes.
I thought Java used the OSes controls -- hence platform independent??

Question:
1) Will Spy++ work on JAVA?
2) Does JAVA use Miscrosofts message stream if it is running on XP for example?

Quote:

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Originally Posted by dw85745

I thought Java used the OSes controls -- hence platform independent??

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I remember hearing the Java uses its own controls rather than the system controls (AWT). I think that has to do with the fact the developers originally wanted it to be used across all operating systems and platforms.

Nightwalker83.
Thanks for response. Based on it I'm guess that expecting Microsofts message stream is NOT an option.
Any idea how one would approach / solve this issue?

Not sure if you want something such as this?

Interesting link. I think a little more sophisticated than what I'm after. Appreciate post.