title: Why I can't run a .java file in the command line?
body: <p>I'm trying to run this in the command line: java InOut
  There is a file InOut.java there, I can see it when I run the dir command.
  But I always get "Could not find or load main class InOut". What am I doing wrong?
  I'm using Eclipse by the way.</p>
  
  <p>Thanks</p>