this is often caused by spaces in the PATH or CLASSPATH environment variables.

open a command prompt and type:
echo %PATH%
echo %CLASSPATH%
this will give you the contents of your PATH and CLASSPATH

changing this:
"C:\Program Files\Java\jre1.5.0_02\lib\ext\QTJava.zip"
to this:
C:\Progra~1\Java\jre1.5.0_02\lib\ext\QTJava.zip
will often fix things.

or sometimes quotes are added in the wrong place by an installer, i.e. a
PATH that looks like this:

C:\Program
Files\Alias\Maya6.5\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\Sys
tem32\Wbem;C:\Program Files\ATI Technologies\ATI Control Panel;"C:\Program
Files
\Norton SystemWorks\Norton Ghost\"

is broken because of the extra quotes around the Norton Ghost stuff at the
end. remove them and things should get back to working.

we have to include the PATH and CLASSPATH because of other DLLs like
quicktime for java or other os-related tidbits. unfortunately this causes
lots of trouble. ideally we might have a small tester app that checks these
variables for trouble before running processing, and suggests a fix.

original post:
http://processing.org/discourse/yabb_beta/YaBB.cgi?board=SoftwareBugs;action=display;num=1114153542

and seems to behave differently in 1.5 versus 1.4:
http://processing.org/discourse/yabb_beta/YaBB.cgi?board=SoftwareBugs;action=display;num=1114040731

*** Bug 134 has been marked as a duplicate of this bug. ***

*** Bug 273 has been marked as a duplicate of this bug. ***

*** Bug 272 has been marked as a duplicate of this bug. ***

fixed for 0102, posted this evening.

when i run the program, it is disappeard right away