title: "error: package org.apache.commons.math3.random does not exist"?
body: <p>I'm trying to compile a java code as in the following line :</p>
  
  <pre><code>  javac -classpath /Users/tim/kws/code/library:/Users/moab/kws/code/commons-cli-1.2/commons-cli-1.2.jar:/Users/tim/kws/code/commons-math-2.2/commons-math-2.2.jar:/Users/tim/kws/code/common-math3-3.1.1/commons-math3-3.1.1.jar RATSWriteLandmarksFromPfile.java 
  </code></pre>
  
  <p>/Users/tim/kws/code/library/ppm/types/LabelPfile.java:17: error: package org.apache.commons.math3.random does not exist
  import org.apache.commons.math3.random.RandomDataImpl;
                                        ^
  /Users/tim/kws/code/library/ppm/types/LabelPfile.java:50: error: cannot find symbol
      private RandomDataImpl randomData_;
              ^
    symbol:   class RandomDataImpl
    location: class LabelPfile
  /Users/tim/kws/code/library/ppm/types/LabelPfile.java:321: error: cannot find symbol
          randomData_ = new RandomDataImpl();
                            ^
    symbol:   class RandomDataImpl
    location: class LabelPfile
  3 errors</p>
  
  <p>does anybody know why am I getting these errors ? </p>