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 Details

### 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 Details

### 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