java.lang
Class Thread

java.lang.Object
  java.lang.Thread

Direct Known Subclasses:

ActivityBase, GPS, Keyboard, LCPBTResponder, Motor.Regulator

public abstract class Thread
extends Object

A thread of execution (or task). Now handles priorities, daemon threads and interruptions.

Field Summary

static int	MAX_PRIORITY The maximum priority that a thread can have.
static int	MIN_PRIORITY The minimum priority that a thread can have.
static int	NORM_PRIORITY The priority that is assigned to the primordial thread.

Constructor Summary

Thread()

Thread(String name)

Method Summary

static Thread	currentThread()
int	getPriority()
void	interrupt() Set the interrupted flag.
static boolean	interrupted()
boolean	isAlive()
boolean	isDaemon() Set the daemon flag.
boolean	isInterrupted()
void	join() Join not yet implemented
void	join(long timeout)
abstract void	run()
void	setDaemon(boolean on)
void	setPriority(int priority) Set the priority of this thread.
static void	sleep(long aMilliseconds)
void	start()
static void	yield()

Methods inherited from class java.lang.Object

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

Field Detail

MIN_PRIORITY

public static final int MIN_PRIORITY

The minimum priority that a thread can have. The value is 1.

See Also:

Constant Field Values

NORM_PRIORITY

public static final int NORM_PRIORITY

The priority that is assigned to the primordial thread. The value is 5.

See Also:

Constant Field Values

MAX_PRIORITY

public static final int MAX_PRIORITY

The maximum priority that a thread can have. The value is 10.

See Also:

Constant Field Values

Constructor Detail

Thread

public Thread()

Thread

public Thread(String name)

Method Detail

isAlive

public final boolean isAlive()

run

public abstract void run()

start

public final void start()

yield

public static void yield()

sleep

public static void sleep(long aMilliseconds)
                  throws InterruptedException

Throws:

InterruptedException

currentThread

public static Thread currentThread()

getPriority

public final int getPriority()

setPriority

public final void setPriority(int priority)

Set the priority of this thread. Higher number have higher priority. The scheduler will always run the highest priority thread in preference to any others. If more than one thread of that priority exists the scheduler will time-slice them. In order for lower priority threas to run a higher priority thread must cease to be runnable. i.e. it must exit, sleep or wait on a monitor. It is not sufficient to just yield.

Threads inherit the priority of their parent. The primordial thread has priority NORM_PRIORITY.

Parameters:

priority - must be between MIN_PRIORITY and MAX_PRIORITY.

interrupt

public void interrupt()

Set the interrupted flag. If we are asleep we will wake up and an InterruptedException will be thrown.

interrupted

public static boolean interrupted()

isInterrupted

public final boolean isInterrupted()

isDaemon

public final boolean isDaemon()

Set the daemon flag. If a thread is a daemon thread its existence will not prevent a JVM from exiting.

setDaemon

public final void setDaemon(boolean on)

join

public final void join()
                throws InterruptedException

Join not yet implemented

Throws:

InterruptedException

join

public final void join(long timeout)
                throws InterruptedException

Throws:

InterruptedException