org.h2.util

类 Task

java.lang.Object

org.h2.util.Task

所有已实现的接口:

Runnable

public abstract class Task
extends Object
implements Runnable

A method call that is executed in a separate thread. If the method throws an exception, it is wrapped in a RuntimeException.

字段概要

字段

限定符和类型	字段和说明
protected Object	result The result, if any.
boolean	stop A flag indicating the get() method has been called.

构造器概要

构造器

构造器和说明
Task()

方法概要

限定符和类型	方法和说明
abstract void	call() The method to be implemented.
Task	execute() Start the thread.
Task	execute(String threadName) Start the thread.
Object	get() Calling this method will set the stop flag and wait until the thread is stopped.
Exception	getException() Get the exception that was thrown in the call (if any).
void	interruptThread() Interrupt the thread.
boolean	isFinished() Whether the call method has returned (with or without exception).
void	join() Stop the thread and wait until it is no longer running.
void	run()

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

stop

public volatile boolean stop

A flag indicating the get() method has been called.

result

protected Object result

The result, if any.

构造器详细资料

Task

public Task()

方法详细资料

call

public abstract void call()
                   throws Exception

The method to be implemented.

抛出:

Exception - any exception is wrapped in a RuntimeException

run

public void run()

指定者:

run 在接口中 Runnable

execute

public Task execute()

Start the thread.

返回:

this

execute

public Task execute(String threadName)

Start the thread.

参数:

threadName - the name of the thread

返回:

this

get

public Object get()

Calling this method will set the stop flag and wait until the thread is stopped.

返回:

the result, or null

抛出:

RuntimeException - if an exception in the method call occurs

isFinished

public boolean isFinished()

Whether the call method has returned (with or without exception).

返回:

true if yes

interruptThread

public void interruptThread()

Interrupt the thread.

getException

public Exception getException()

Get the exception that was thrown in the call (if any).

返回:

the exception or null

join

public void join()

Stop the thread and wait until it is no longer running. Exceptions are ignored.