All Implemented Interfaces:

Serializable, Comparable<Thread.State>

Enclosing class:

Thread

public static enum Thread.State
extends Enum<Thread.State>

Since:

1.5

See Also:

Thread.getState()

• Enum Constant Summary

  Enum Constants

  Enum Constant	Description
  BLOCKED	Thread state for a thread blocked waiting for a monitor lock.
  NEW	Thread state for a thread which has not yet started.
  RUNNABLE	Thread state for a runnable thread.
  TERMINATED	Thread state for a terminated thread.
  TIMED_WAITING	Thread state for a waiting thread with a specified waiting time.
  WAITING	Thread state for a waiting thread.

• Method Summary

  All Methods

  Modifier and Type	Method	Description
  static Thread.State	valueOf (String name)	Returns the enum constant of this type with the specified name.
  static Thread.State[]	values ()	Returns an array containing the constants of this enum type, in the order they are declared.

  • Methods inherited from class java.lang.Enum

    clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

  • Methods inherited from class java.lang.Object

    getClass, notify, notifyAll, wait, wait, wait

• Enum Constant Detail

  • NEW

    public static final Thread.State NEW

    Thread state for a thread which has not yet started.

  • RUNNABLE

    public static final Thread.State RUNNABLE

    Thread state for a runnable thread. A thread in the runnable state is executing in the Java virtual machine but it may be waiting for other resources from the operating system such as processor.

  • BLOCKED

    public static final Thread.State BLOCKED

    Thread state for a thread blocked waiting for a monitor lock. A thread in the blocked state is waiting for a monitor lock to enter a synchronized block/method or reenter a synchronized block/method after calling Object.wait.

  • WAITING

    public static final Thread.State WAITING

    Thread state for a waiting thread. A thread is in the waiting state due to calling one of the following methods:

    • Object.wait with no timeout
    • Thread.join with no timeout
    • LockSupport.park

    A thread in the waiting state is waiting for another thread to perform a particular action. For example, a thread that has called Object.wait() on an object is waiting for another thread to call Object.notify() or Object.notifyAll() on that object. A thread that has called Thread.join() is waiting for a specified thread to terminate.

  • TIMED_WAITING

    public static final Thread.State TIMED_WAITING

    Thread state for a waiting thread with a specified waiting time. A thread is in the timed waiting state due to calling one of the following methods with a specified positive waiting time:

    • Thread.sleep
    • Object.wait with timeout
    • Thread.join with timeout
    • LockSupport.parkNanos
    • LockSupport.parkUntil

  • TERMINATED

    public static final Thread.State TERMINATED

    Thread state for a terminated thread. The thread has completed execution.

• Method Detail

  • values

    public static Thread.State[] values()

    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

    for (Thread.State c : Thread.State.values())
     System.out.println(c);
    

    Returns:

    an array containing the constants of this enum type, in the order they are declared

  • valueOf

    public static Thread.State valueOf(String name)

    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

    Parameters:

    name - the name of the enum constant to be returned.

    Returns:

    the enum constant with the specified name

    Throws:

    IllegalArgumentException - if this enum type has no constant with the specified name

    NullPointerException - if the argument is null