Module java.base
Package java.util

## Class IllformedLocaleException

- java.lang.Object
- - java.lang.Throwable
  - - java.lang.Exception
    - - java.lang.RuntimeException
      - - java.util.IllformedLocaleException

- All Implemented Interfaces:
    `Serializable`

      public class IllformedLocaleException
      extends RuntimeException

  Thrown by methods in `Locale` and `Locale.Builder` to indicate that an argument is not a well-formed BCP 47 tag.
  Since:
    1.7
  See Also:
    `Locale`, Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `IllformedLocaleException()` | Constructs a new `IllformedLocaleException` with no detail message and -1 as the error index.
    `IllformedLocaleException​(String message)` | Constructs a new `IllformedLocaleException` with the given message and -1 as the error index.
    `IllformedLocaleException​(String message, int errorIndex)` | Constructs a new `IllformedLocaleException` with the given message and the error index.

  - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `int` | `getErrorIndex()` | Returns the index where the error was found.

    - ### 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

    - #### IllformedLocaleException

          public IllformedLocaleException()

      Constructs a new `IllformedLocaleException` with no detail message and -1 as the error index.

    - #### IllformedLocaleException

          public IllformedLocaleException​(String message)

      Constructs a new `IllformedLocaleException` with the given message and -1 as the error index.
      Parameters:
        `message` - the message

    - #### IllformedLocaleException

          public IllformedLocaleException​(String message,
                                          int errorIndex)

      Constructs a new `IllformedLocaleException` with the given message and the error index. The error index is the approximate offset from the start of the ill-formed value to the point where the parse first detected an error. A negative error index value indicates either the error index is not applicable or unknown.
      Parameters:
        `message` - the message
        `errorIndex` - the index

  - ### Method Detail

    - #### getErrorIndex

          public int getErrorIndex()

      Returns the index where the error was found. A negative value indicates either the error index is not applicable or unknown.
      Returns:
        the error index