title: Runnable jar runs too slow compared to eclipse project
body: <p>I have extracted a jar file from an eclipse project but it runs too slow. It takes almost twenty minutes to complete and the eclipse project only takes some seconds.
  I exported runnable jar with library handling with all three differenct choices. I also exported jar file with all library handling choices. I also run jar file with command:</p>
  
  <pre><code>java -Xmx2048m -Xms1024m -jar "finalJar.jar"
  </code></pre>
  
  <p>I have removed all System.out.println except the last one that gives me the answer.
  What can I do to export a jar that is almost fast as the original project? Or run it with a different way to be faster? Because the difference in time is too big and I don't understand why.</p>