-windowtitle <text> in javadoc

I am executing the following javadoc through a servlet.

javadoc -windowtitle "xxx yyy" -d <abs target path> -sourcepath <abs sourcepath> pkg1 pkg2

It gives the following error:

javadoc: No package, class, or source file found named yyy"

But when I don't have any space between xxx and yyy such as "xxxyyy" it works fine.

Same thing happens when specifying the header,footer also.

How should I specify space in the title, header and footer?

I am using

java version "1.2.1"

Solaris VM (build Solaris_JDK_1.2.1_02, native threads, sunwjit

Thanks.

[638 byte] By [csoundap] at [2007-9-26 20:23:48]