# Class IllegalArgumentException

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

All Implemented Interfaces:
  `Serializable`

Direct Known Subclasses:
  `ConstantPoolException, IllegalChannelGroupException, IllegalCharsetNameException, IllegalFormatException, IllegalSelectorException, IllegalThreadStateException, InvalidKeyException, InvalidOpenTypeException, InvalidParameterException, InvalidPathException, InvalidStreamException, KeyAlreadyExistsException, NumberFormatException, PatternSyntaxException, ProviderMismatchException, UnresolvedAddressException, UnsupportedAddressTypeException, UnsupportedCharsetException`

public class IllegalArgumentException extends RuntimeException
Thrown to indicate that a method has been passed an illegal or inappropriate argument.

Since:
  1.0
See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `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 declared in class Throwable

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

  ### Methods declared in class Object

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

- ## Constructor Details

  - ### 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