title: .jar Files do not open at all
body: <p>I have been having this problem for the past two years.</p>
  
  <p>I have a .jar file downloaded from the internet. It's supposed to be a rubik's cube timer. </p>
  
  <p>When I double click on this .jar file, nothing happens. If I set .jar files to open with java.exe it opens a command window for a split second, and says: </p>
  
  <p><em>Error: Could not find or load main class C:User\Dominic\Desktop\PrismaPuzzleTimer0.6.jar</em></p>
  
  <p>If I set .jar files to open with javaw.exe, my cursor becomes that busy icon for a split second and then nothing will happen.</p>
  
  <p>I have no idea what to do. </p>
  
  <p>My computer is running Windows 7 64 bit. My java is version 7 update 25.</p>
  
  <p>Thanks!</p>