【The Java™ Tutorials】【Regular Expressions】11. Methods of the PatternSyntaxException Class

• public String getDescription(): Retrieves the description of the error.
• public int getIndex(): Retrieves the error index.
• public String getPattern(): Retrieves the erroneous regular expression pattern.
• public String getMessage(): Returns a multi-line string containing the description of the syntax error and its index, the erroneous regular-expression pattern, and a visual indication of the error index within the pattern.