I am making software in java. Tell me how to convert .java file to .jar file that can be runnable
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/2023506/selecting-main-class-in-a-runnable-jar-at-runtime">Selecting main class in a runnable jar at runtime</a>  </p>
</blockquote>



<p>Help me to convert .java file to .jar</p>
