# Class IllegalThreadStateException

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

All Implemented Interfaces:
  `Serializable`

public class IllegalThreadStateException extends IllegalArgumentException
Thrown to indicate that a thread is not in an appropriate state for the requested operation.

Since:
  1.0
See Also:
  - `Thread.start()`
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `IllegalThreadStateException()`
  Constructs an `IllegalThreadStateException` with no detail message.
  `IllegalThreadStateException(String s)`
  Constructs an `IllegalThreadStateException` with the specified detail message.

- ## 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

  - ### IllegalThreadStateException

    public IllegalThreadStateException()
    Constructs an `IllegalThreadStateException` with no detail message.

  - ### IllegalThreadStateException

    public IllegalThreadStateException(String s)
    Constructs an `IllegalThreadStateException` with the specified detail message.
    Parameters:
      `s` - the detail message.