title: Oracle's Server JRE Contains JDK?
body: <p>I've just downloaded Oracle's Server JRE for Java SE 7 (<a href="http://www.oracle.com/technetwork/java/javase/downloads/server-jre7-downloads-1931105.html" rel="noreferrer">link</a>) The file I downloaded was <code>server-jre-7u45-linux-x64.tar.gz</code>. When I extracted this file I was surprised to find a directory named <b>jdk1.7.0_45</b> was created containing the full java JDK.  Not what I expected from a JRE install.  What is going on here? </p>