jre download bundles don't extract executably

[Martin Buchholz]

HI guys,

I downloaded some of the JREs from download.java.net.
The JRE's are packaged differently from the JDKs, for no apparent reason.
The JDKs are .bin files.  The JREs are .jar files.  Why?
The JDK 6 download bundles were all .bin files.

When I extract the JREs (using java -jar )
The resulting jre1.7.0 directory contains no executable files.
For example, here's what happens when I try to run "java":

$ bin/java -version
zsh: permission denied: bin/java

Martin