title: Increase heap size in java for weka
body: <p>I'm trying to increase the heap size in java for weka which keeps crashing.  I used the suggested line:</p>
  
  <pre><code>&gt; java -Xmx500m -classpath
  </code></pre>
  
  <p>but I get the following error:</p>
  
  <pre><code>-classpath requires class path specification
  </code></pre>
  
  <p>I'm not sure what this means.  Any suggestions?</p>