title: How do I make a JAR from a .java file?
body: <p>I was writing a simple program using a Java application (not application that has projects, but application within a project; <em>.java</em>) that has a single frame. Both of the files are <em>.java</em> so I can't write a <em>manifest</em> needed by the JAR.</p>
  <p>The <em>MyApp.java</em> starts like a class with package, imports then public class <code>MyApp</code> and has a main function, but it's still .java file! I'm writing it in JDeveloper 11g if it helps.</p>
  <p>Any ideas how to make a JAR from these files?</p>