程序包 java.lang

枚举 Thread.State

java.lang.Object

java.lang.Enum<Thread.State>

java.lang.Thread.State

所有已实现的接口:

Serializable, Comparable<Thread.State>

封闭类:

Thread

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

A thread state. A thread can be in one of the following states:

• NEW
  A thread that has not yet started is in this state.
• RUNNABLE
  A thread executing in the Java virtual machine is in this state.
• BLOCKED
  A thread that is blocked waiting for a monitor lock is in this state.
• WAITING
  A thread that is waiting indefinitely for another thread to perform a particular action is in this state.
• TIMED_WAITING
  A thread that is waiting for another thread to perform an action for up to a specified waiting time is in this state.
• TERMINATED
  A thread that has exited is in this state.

A thread can be in only one state at a given point in time. These states are virtual machine states which do not reflect any operating system thread states.

从以下版本开始:

1.5

另请参阅:

Thread.getState()

枚举常量概要

枚举常量

枚举常量	说明
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.

方法概要

限定符和类型	方法	说明
static Thread.State	valueOf(String name)	返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)
static Thread.State[]	values()	按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示: for (Thread.State c : Thread.State.values()) System.out.println(c);

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

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(long) 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.

方法详细资料

values

public static Thread.State[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

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

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static Thread.State valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值