Summary

Add an explicitly declared no-arg constructor to java.lang.Number to avoid use of the default constructor.

Problem

Default constructors are inappropriate for well-documented APIs.

Solution

Add an explicit (trivial) constructor to java.lang.Number.

Specification

 public abstract class Number implements java.io.Serializable {
     /**
+     * Constructor for subclasses to call.
+     */
+    public Number() {super();}
+
+    /**