made Complex class final.
@@ -44,7 +44,7 @@ import org.apache.commons.numbers.core.Precision;
* object types.</p>
*
*/
-public class Complex implements Serializable {
+final public class Complex implements Serializable {
/** The square root of -1, a.k.a. "i". */
public static final Complex I = new Complex(0, 1);
/** A complex number representing "+INF + INF i" */
