IllegalArgumentException

public class IllegalArgumentException
extends RuntimeException

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

Known direct subclasses

IllegalChannelGroupException, IllegalCharsetNameException, IllegalFormatException, IllegalSelectorException, IllegalThreadStateException, InvalidParameterException, InvalidPathException, NumberFormatException, PatternSyntaxException, ProviderMismatchException, SystemUpdatePolicy.ValidationFailedException, UnresolvedAddressException, UnsupportedAddressTypeException, UnsupportedCharsetException

IllegalChannelGroupException	Unchecked exception thrown when an attempt is made to open a channel in a group that was not created by the same provider.
IllegalCharsetNameException	Unchecked exception thrown when a string that is not a legal charset name is used as such.
IllegalFormatException	Unchecked exception thrown when a format string contains an illegal syntax or a format specifier that is incompatible with the given arguments.
IllegalSelectorException	Unchecked exception thrown when an attempt is made to register a channel with a selector that was not created by the provider that created the channel.
IllegalThreadStateException	Thrown to indicate that a thread is not in an appropriate state for the requested operation.
InvalidParameterException	This exception, designed for use by the JCA/JCE engine classes, is thrown when an invalid parameter is passed to a method.
InvalidPathException	Unchecked exception thrown when path string cannot be converted into a `Path` because the path string contains invalid characters, or the path string is invalid for other file system specific reasons.
NumberFormatException	Thrown to indicate that the application has attempted to convert a string to one of the numeric types, but that the string does not have the appropriate format.
PatternSyntaxException	Unchecked exception thrown to indicate a syntax error in a regular-expression pattern.
ProviderMismatchException	Unchecked exception thrown when an attempt is made to invoke a method on an object created by one file system provider with a parameter created by a different file system provider.
SystemUpdatePolicy.ValidationFailedException	An exception class that represents various validation errors thrown from `SystemUpdatePolicy#setFreezePeriods` and `DevicePolicyManager#setSystemUpdatePolicy`
UnresolvedAddressException	Unchecked exception thrown when an attempt is made to invoke a network operation upon an unresolved socket address.
UnsupportedAddressTypeException	Unchecked exception thrown when an attempt is made to bind or connect to a socket address of a type that is not supported.
UnsupportedCharsetException	Unchecked exception thrown when no support is available for a requested charset.

Known indirect subclasses

DuplicateFormatFlagsException, FormatFlagsConversionMismatchException, IllegalFormatCodePointException, IllegalFormatConversionException, IllegalFormatFlagsException, IllegalFormatPrecisionException, IllegalFormatWidthException, MissingFormatArgumentException, MissingFormatWidthException, UnknownFormatConversionException, UnknownFormatFlagsException

DuplicateFormatFlagsException	Unchecked exception thrown when duplicate flags are provided in the format specifier.
FormatFlagsConversionMismatchException	Unchecked exception thrown when a conversion and flag are incompatible.
IllegalFormatCodePointException	Unchecked exception thrown when a character with an invalid Unicode code point as defined by `Character#isValidCodePoint` is passed to the `Formatter`.
IllegalFormatConversionException	Unchecked exception thrown when the argument corresponding to the format specifier is of an incompatible type.
IllegalFormatFlagsException	Unchecked exception thrown when an illegal combination flags is given.
IllegalFormatPrecisionException	Unchecked exception thrown when the precision is a negative value other than `-1`, the conversion does not support a precision, or the value is otherwise unsupported.
IllegalFormatWidthException	Unchecked exception thrown when the format width is a negative value other than `-1` or is otherwise unsupported.
MissingFormatArgumentException	Unchecked exception thrown when there is a format specifier which does not have a corresponding argument or if an argument index refers to an argument that does not exist.
MissingFormatWidthException	Unchecked exception thrown when the format width is required.
UnknownFormatConversionException	Unchecked exception thrown when an unknown conversion is given.
UnknownFormatFlagsException	Unchecked exception thrown when an unknown flag is given.

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

Summary

Public constructors
`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`).

Inherited methods

From class java.lang.Throwable

`final void`	`addSuppressed(Throwable exception)` Appends the specified exception to the exceptions that were suppressed in order to deliver this exception.
`Throwable`	`fillInStackTrace()` Fills in the execution stack trace.
`Throwable`	`getCause()` Returns the cause of this throwable or `null` if the cause is nonexistent or unknown.
`String`	`getLocalizedMessage()` Creates a localized description of this throwable.
`String`	`getMessage()` Returns the detail message string of this throwable.
`StackTraceElement[]`	`getStackTrace()` Provides programmatic access to the stack trace information printed by `printStackTrace()`.
`final Throwable[]`	`getSuppressed()` Returns an array containing all of the exceptions that were suppressed, typically by the `try`-with-resources statement, in order to deliver this exception.
`Throwable`	`initCause(Throwable cause)` Initializes the cause of this throwable to the specified value.
`void`	`printStackTrace()` Prints this throwable and its backtrace to the standard error stream.
`void`	`printStackTrace(PrintWriter s)` Prints this throwable and its backtrace to the specified print writer.
`void`	`printStackTrace(PrintStream s)` Prints this throwable and its backtrace to the specified print stream.
`void`	`setStackTrace(StackTraceElement[] stackTrace)` Sets the stack trace elements that will be returned by `getStackTrace()` and printed by `printStackTrace()` and related methods.
`String`	`toString()` Returns a short description of this throwable.

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

public IllegalArgumentException ()

Constructs an IllegalArgumentException with no detail message.

IllegalArgumentException

public IllegalArgumentException (String s)

Constructs an IllegalArgumentException with the specified detail message.

Parameters
`s`	`String`: 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`	`String`: the detail message (which is saved for later retrieval by the `Throwable#getMessage()` method).
`cause`	`Throwable`: 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.)

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`	`Throwable`: 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.)