title: Nothing happening when I do enter java <name> on shell (It gives me no output or errors but seems to be processing for a bit)
body: <p>I built this project on NetBeans, and it runs fine from there. I can't get it to run on Shell. </p>
  
  <p>The directory is .../AStarVacuum/src/astarvacuum</p>
  
  <p>astarvacuum's contents are: 
  AStarVacuum.java  Node.java  VacuumUtils.java  Grid.java
  AStarVacuum.class  Node.class  VacuumUtils.class  Grid.class</p>
  
  <p>The main function is in AStarVacuum. The other java class files are also part of this project.</p>
  
  <p>When I enter the command "java AStarVacuum" nothing happens other than shell lagging for a bit if I enter any other commands. I've waited without doing anything for it to do something for 30 minutes or so, even, but it gives me not output whatsoever.</p>
  
  <p>Here is the code for the class containing main:</p>
  
  <pre><code>//package astarvacuum; from netbeans, commented out for shell
  public class AStarVacuum {
      public static void main(String[] args) {
  ...
   }
  
  }
  </code></pre>
  
  <p>And, here is the code for another class. The others were pretty similar:</p>
  
  <pre><code>//package astarvacuum;
  import java.util.ArrayList;
  import java.lang.Thread;
  public class Node {
  ...
  }
  </code></pre>
  
  <p>I'm kind of a newb at this; I usually use ides, but my professor wants me to submit this to a server and be able to run this from shell.</p>
  
  <p>Any help would be appreciated.</p>