Method checkKeyAndValue

src/java/org/apache/poi/util/BinaryTree.java:1249–1253

check a key and a value for validity (non-null and implements Comparable) @param key the key to be checked @param value the value to be checked @exception NullPointerException if key or value is null @exception ClassCastException if key or value is not Comparable

(Object key, Object value)

     * @exception ClassCastException if key or value is not Comparable
     */
    private static void checkKeyAndValue(Object key, Object value)
    {
        checkKey(key);
        checkValue(value);
    }

    /**
     * increment the modification count -- used to check for