JRE size.

The JRE seems to be 60-70 megs on the HD with roughly half of the size being jar files. Wondering, are these jar files (one is 35 megs) necessary or are they a doublette of something?

jre/lib/rt.jar is 35 megabytes, can it be deleted?

Also, is it even allowed by Sun to modify the JRE , I do not think so?

Have a look inside rt.jar with a zip tool and you should quickly realise that it is very, very important to a functioning JRE.