Could not locate Java runtime. Oracle installation error

I install oracle 9i in solaris 9 SPARC. At the end of installation, some componenst was failed to be installed (eg. Database Comfiguration Assistant). Most of the error is "Could not locate Java runtime"

Also when I type "dbca" from Terminal, the same error was appears-->Could not locate Java runtime

Anyone knows how to solve this error?
Any comment, answer, and sugestion would be greatly appreciated.

Thank a lot.

check all the requirement packges and java version . You can download it from Sun website then you will be fine.