JAVA 1.5 ... where is this on the Solaris CD?

I need to upgrade my JRE and want to upgrade to 1.5.x and I have the CD from my co-worker. However, on this CD I see a bunch of files listed like /sun2, /sun3, /sun4. I looked through the files and do nto see the JRE 1.5 software. Is it possible that the upgrade consists of installing files (like patches?)...

Thanks for your help!

[345 byte] By [blueridgea] at [2008-3-6]