IllegalFormatConversionException (Java SE 12 & JDK 12 )
Keywords: java.util.IllegalFormatConversionException class

Module java.base
Package java.util

## Class IllegalFormatConversionException

- java.lang.Object
- - java.lang.Throwable
  - - java.lang.Exception
    - - java.lang.RuntimeException
      - - java.lang.IllegalArgumentException
        - - java.util.IllegalFormatException
          - - java.util.IllegalFormatConversionException

- All Implemented Interfaces:
    `Serializable`

      public class IllegalFormatConversionException
      extends IllegalFormatException

  Unchecked exception thrown when the argument corresponding to the format specifier is of an incompatible type.

  Unless otherwise specified, passing a `null` argument to any method or constructor in this class will cause a `NullPointerException` to be thrown.

  Since:
    1.5
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `IllegalFormatConversionException​(char c, Class<?> arg)` | Constructs an instance of this class with the mismatched conversion and the corresponding argument class.

  - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `Class<?>` | `getArgumentClass()` | Returns the class of the mismatched argument.
    `char` | `getConversion()` | Returns the inapplicable conversion.

    - ### Methods declared in class java.lang.Throwable

      `addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

    - ### Methods declared in class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### IllegalFormatConversionException

          public IllegalFormatConversionException​(char c,
                                                  Class<?> arg)

      Constructs an instance of this class with the mismatched conversion and the corresponding argument class.
      Parameters:
        `c` - Inapplicable conversion
        `arg` - Class of the mismatched argument

  - ### Method Detail

    - #### getConversion

          public char getConversion()

      Returns the inapplicable conversion.
      Returns:
        The inapplicable conversion

    - #### getArgumentClass

          public Class<?> getArgumentClass()

      Returns the class of the mismatched argument.
      Returns:
        The class of the mismatched argument