title: echo $JAVA_HOME not returning jdk location
body: <p>When I type in echo $JAVA_HOME, I get $JAVA_HOME instead of the location of the jdk.
  I set the path from the environment variables correctly:</p>
  
  <p>Variable name : JAVA_HOME
  Variable value: C:\Program Files\Java\jdk1.7.0_25</p>
  
  <p>what am I doing wrong?</p>