Java In A Nutshell, 5th Edition

An IllegalFormatException of this type is thrown by a Formatter when a format conversion requires a field width, but the width is omitted.

public class MissingFormatWidthException extends IllegalFormatException { // Public Constructors public MissingFormatWidthException (String s ); // Public Instance Methods public String getFormatSpecifier ( ); // Public Methods Overriding Throwable public String getMessage ( ); }