title: How can I tell whether Java is Sun / Oracle / OpenJDK?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/8472121/which-jre-i-am-using">Which JRE I am using</a>  </p>
  </blockquote>
  
  
  
  <p>I'm trying to figure out whether the Java installation in my HPC environment is running the Sun JVM, or Oracle, or OpenJDK. Since I don't have administrator access and I didn't install Java, is there a quick way I can determine which JVM I have installed?</p>
  
  <pre><code>standage@login4:~$ which java
  /usr/bin/java
  standage@login4:~$ java -version
  java version "1.6.0_03"
  Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
  Java HotSpot(TM) Server VM (build 1.6.0_03-b05, mixed mode)
  standage@login4:~$ uname
  Linux
  </code></pre>