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## java.lang
Class IllegalArgumentException

    java.lang.Object
      java.lang.Throwable
          java.lang.Exception
              java.lang.RuntimeException
                  java.lang.IllegalArgumentException

All Implemented Interfaces:
  Serializable

Direct Known Subclasses:
  IllegalCharsetNameException, IllegalFormatException, IllegalSelectorException, IllegalThreadStateException, InvalidKeyException, InvalidOpenTypeException, InvalidParameterException, KeyAlreadyExistsException, NumberFormatException, PatternSyntaxException, UnresolvedAddressException, UnsupportedAddressTypeException, UnsupportedCharsetException

    public class IllegalArgumentException

extends RuntimeException

Thrown to indicate that a method has been passed an illegal or inappropriate argument.

Since:
  JDK1.0
See Also:
  `Thread.setPriority(int)`, Serialized Form

Constructor Summary
`IllegalArgumentException()` Constructs an `IllegalArgumentException` with no detail message.
`IllegalArgumentException(String s)` Constructs an `IllegalArgumentException` with the specified detail message.
`IllegalArgumentException(String message, Throwable cause)` Constructs a new exception with the specified detail message and cause.
`IllegalArgumentException(Throwable cause)` Constructs a new exception with the specified cause and a detail message of `(cause==null ? null : cause.toString())` (which typically contains the class and detail message of `cause`).

Method Summary

Methods inherited from class java.lang.Throwable
`fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### IllegalArgumentException

    public IllegalArgumentException()

  Constructs an `IllegalArgumentException` with no detail message.

### IllegalArgumentException

    public IllegalArgumentException(String s)

  Constructs an `IllegalArgumentException` with the specified detail message.

  Parameters:
    `s` - the detail message.

### IllegalArgumentException

    public IllegalArgumentException(String message,
                                    Throwable cause)

  Constructs a new exception with the specified detail message and cause.

  Note that the detail message associated with `cause` is not automatically incorporated in this exception's detail message.

  Parameters:
    `message` - the detail message (which is saved for later retrieval by the `Throwable.getMessage()` method).
    `cause` - the cause (which is saved for later retrieval by the `Throwable.getCause()` method). (A `null` value is permitted, and indicates that the cause is nonexistent or unknown.)
  Since:
    1.5

### IllegalArgumentException

    public IllegalArgumentException(Throwable cause)

  Constructs a new exception with the specified cause and a detail message of `(cause==null ? null : cause.toString())` (which typically contains the class and detail message of `cause`). This constructor is useful for exceptions that are little more than wrappers for other throwables (for example, `PrivilegedActionException`).

  Parameters:
    `cause` - the cause (which is saved for later retrieval by the `Throwable.getCause()` method). (A `null` value is permitted, and indicates that the cause is nonexistent or unknown.)
  Since:
    1.5

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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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