title: Could not find main class:Main, the application will exit
body: <p>I've got Main.java, which looks like this:</p>
  
  <pre><code>public class Main {
  
      /**
       * @param args
       */
      public static void main(String[] args) throws UnsupportedEncodingException {
          // TODO Auto-generated method stub
          System.out.println("here!");
      }
  
  }
  </code></pre>
  
  <p>I compile it with:</p>
  
  <pre><code>javac Main.java
  </code></pre>
  
  <p>And try to run it with </p>
  
  <pre><code>java Main
  </code></pre>
  
  <p>and it dies with folloving exception:</p>
  
  <pre><code>Exception in thread "main" java.lang.UnsupportedClassVersionError: Main : Unsupported major.minor version 51.0
          at java.lang.ClassLoader.defineClass1(Native Method)
          at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
          at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
          at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
          at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
          at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
          at java.security.AccessController.doPrivileged(Native Method)
          at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
          at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
  Could not find the main class: Main. Program will exit.
  </code></pre>
  
  <p>java -version is:</p>
  
  <pre><code>java version "1.6.0_24"
  OpenJDK Runtime Environment (IcedTea6 1.11.3) (6b24-1.11.3-1ubuntu0.12.04.1)
  OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
  </code></pre>
  
  <p>I'm running this on Ubuntu server.</p>
  
  <p>What am I doing wrong?</p>
  
  <p><strong>UPDATE</strong> </p>
  
  <p><code>javac -version</code> is</p>
  
  <pre><code>javac 1.7.0_03
  </code></pre>
  
  <p><code>which java</code></p>
  
  <pre><code>/usr/bin/java
  </code></pre>
  
  <p><code>which javac</code></p>
  
  <pre><code>/usr/bin/javac
  </code></pre>