* the object itself (its class name will be used in message)\r
*/\r
public UnsupportedException(String nature, Object obj) {\r
- super("Unsupported " + nature + ": " + obj.getClass());\r
+ super("Unsupported " + nature + ": "\r
+ + (obj != null ? obj.getClass() : "[object is null]"));\r
}\r
\r
/**\r