20.20

java.lang.Thread

THE PACKAGE JAVA.LANG

public final void setPriority(int newPriority)

throws SecurityException, IllegalArgumentException;

public final boolean isDaemon();

public final void setDaemon(boolean on)

throws SecurityException, IllegalThreadStateException;

public final boolean isAlive();

public int countStackFrames();

public final void join()

throws InterruptedException;

public final void join(long millis)

throws InterruptedException;

public final void join(long millis, int nanos)

throws InterruptedException;

public void interrupt();

public boolean isInterrupted();

public static boolean interrupted();

public static Thread currentThread();

public static int activeCount();

//

deprecated

public static int enumerate(Thread tarray[]);

//

deprecated

public static void dumpStack();

public static void yield();

public static void sleep(long millis)

throws InterruptedException;

public static void sleep(long millis, int nanos)

throws InterruptedException;

public void destroy();

}

When a new

Thread

 object is created, the thread it represents is not yet active.

It is activated when some other thread calls the

start

 method ( 20.20.14) of the

Thread

 object. This causes the thread represented by the

Thread

 object to invoke

the

run

 method ( 20.20.13) of the

Thread

 object. The newly activated thread then

remains alive until it stops because one of five things occurs:

The initial invocation of the

run

 method by the newly activated thread com 

pletes normally through a normal return from the

run

 method.

The initial invocation of the

run

 method by the newly activated thread com 

pletes abruptly because an exception was thrown.

The thread invokes the

stop

 method ( 20.20.15) of the

Thread

 object (and

the security manager ( 20.17.11) approves execution of the

stop

 operation).

Some other thread invokes the

stop

 method of the

Thread

 object (and the

security manager ( 20.17.11) approves execution of the

stop

 operation).

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