# Class IllegalStateException

java.lang.Object
java.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
java.lang.IllegalStateException

All Implemented Interfaces:
  `Serializable`

Direct Known Subclasses:
  `AcceptPendingException, AlreadyBoundException, AlreadyConnectedException, CancellationException, CancelledKeyException, ClosedDirectoryStreamException, ClosedFileSystemException, ClosedSelectorException, ClosedWatchServiceException, ConnectionPendingException, FormatterClosedException, IllegalBlockingModeException, IllegalComponentStateException, IllegalReceiveException, IllegalUnbindException, InvalidDnDOperationException, InvalidMarkException, NoConnectionPendingException, NonReadableChannelException, NonWritableChannelException, NotYetBoundException, NotYetConnectedException, OverlappingFileLockException, ReadPendingException, ShutdownChannelGroupException, WritePendingException`

public class IllegalStateException extends RuntimeException
Signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.

Since:
  1.1
See Also:
  - Serialized Form

## Constructor Summary

Constructors
Constructor
Description
`IllegalStateException()`
Constructs an IllegalStateException with no detail message.
`IllegalStateException(String s)`
Constructs an IllegalStateException with the specified detail message.
`IllegalStateException(String message, Throwable cause)`
Constructs a new exception with the specified detail message and cause.
`IllegalStateException(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

### IllegalStateException

public IllegalStateException()
Constructs an IllegalStateException with no detail message. A detail message is a String that describes this particular exception.

### IllegalStateException

public IllegalStateException(String s)
Constructs an IllegalStateException with the specified detail message. A detail message is a String that describes this particular exception.

Parameters:
  `s` - the String that contains a detailed message

### IllegalStateException

public IllegalStateException(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

### IllegalStateException

public IllegalStateException(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