Pretty much none. Other than that both
have a syntax similar to C/C++. JavaScript
is a browser scripting language, Java is
much much more, almost too much to mention
briefly. JavaScript I think was orginally
a Netscape creation, but I'm not sure about
that. It would be interesting to find out
how the naming similarity came about, or
if it was all coincidence. In a browser,
JavaScript can talk to a Java applet, but
that's pretty much all the connection they
have.