Adding serialversionUID to control versioning and allow for implementations that would like to maintain serialization.

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141270 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/commons/math/random/EmpiricalDistributionImpl.java

@@ -53,10 +53,12 @@ import org.apache.commons.math.stat.univariate.SummaryStatistics;
  *    entry per line.</li>
  * </ul></p>
  *
- * @version $Revision: 1.19 $ $Date: 2004/04/26 19:15:48 $
+ * @version $Revision: 1.20 $ $Date: 2004/06/02 00:20:21 $
  */
 public class EmpiricalDistributionImpl implements Serializable, EmpiricalDistribution {
 
+    /** Serializable version identifier */
+    static final long serialVersionUID = -6773236347582113490L;
     
     /** List of DescriptiveStatistics objects characterizing the bins */
     private ArrayList binStats = null;

src/java/org/apache/commons/math/random/RandomDataImpl.java

@@ -66,10 +66,13 @@ import java.util.Collection;
  * (so secure sequences started with calls to reseedSecure(long) won't be 
  * identical).</li></ul>
  * 
- * @version $Revision: 1.13 $ $Date: 2004/04/11 19:00:45 $
+ * @version $Revision: 1.14 $ $Date: 2004/06/02 00:20:21 $
  */
 public class RandomDataImpl implements RandomData, Serializable {
     
+    /** Serializable version identifier */
+    static final long serialVersionUID = -626730818244969716L;
+
     /** underlying random number generator */
     private Random rand = null;
     

src/java/org/apache/commons/math/stat/Frequency.java

@@ -32,10 +32,13 @@ import org.apache.commons.collections.bag.TreeBag;
  * The values are ordered using the default (natural order), unless a  <code>Comparator</code>
  * is supplied in the constructor.
  * 
- * @version $Revision: 1.21 $ $Date: 2004/05/31 20:57:12 $
+ * @version $Revision: 1.22 $ $Date: 2004/06/02 00:24:52 $
  */
 public class Frequency implements Serializable {
     
+    /** Serializable version identifier */
+    static final long serialVersionUID = -3845586908418844111L;
+
     /** underlying collection */
     private SortedBag freqTable = null;