An IllegalFormatException of this type is thrown by a Formatter when the width of a format string is illegal.

Figure 16-33. java.util.IllegalFormatWidthException

public class IllegalFormatWidthException extends IllegalFormatException {
// Public Constructors
     public IllegalFormatWidthException(int w);  
// Public Instance Methods
     public int getWidth( );  
// Public Methods Overriding Throwable
     public String getMessage( );  
}