## Uses of Class
java.util.IllegalFormatException

- Packages that use IllegalFormatException
  Package | Description
  --- | ---
  java.util | Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.

- - ### Uses of IllegalFormatException in java.util

    Subclasses of IllegalFormatException in java.util
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `DuplicateFormatFlagsException` | Unchecked exception thrown when duplicate flags are provided in the format specifier.
    `class` | `FormatFlagsConversionMismatchException` | Unchecked exception thrown when a conversion and flag are incompatible.
    `class` | `IllegalFormatCodePointException` | Unchecked exception thrown when a character with an invalid Unicode code point as defined by `Character.isValidCodePoint(int)` is passed to the `Formatter`.
    `class` | `IllegalFormatConversionException` | Unchecked exception thrown when the argument corresponding to the format specifier is of an incompatible type.
    `class` | `IllegalFormatFlagsException` | Unchecked exception thrown when an illegal combination flags is given.
    `class` | `IllegalFormatPrecisionException` | Unchecked exception thrown when the precision is a negative value other than `-1`, the conversion does not support a precision, or the value is otherwise unsupported.
    `class` | `IllegalFormatWidthException` | Unchecked exception thrown when the format width is a negative value other than `-1` or is otherwise unsupported.
    `class` | `MissingFormatArgumentException` | Unchecked exception thrown when there is a format specifier which does not have a corresponding argument or if an argument index refers to an argument that does not exist.
    `class` | `MissingFormatWidthException` | Unchecked exception thrown when the format width is required.
    `class` | `UnknownFormatConversionException` | Unchecked exception thrown when an unknown conversion is given.
    `class` | `UnknownFormatFlagsException` | Unchecked exception thrown when an unknown flag is given.