Hello,
If i create a thread what is it add threadGroup.
example:
public class OneThread extends Thread {
public boolean state = true;
public OneThread() {
}
public void run() {
while( state != false ) {
System.out.println("Running");
wait(2000);
}
}
public void ThreadStop() {
state = false;
}
}
OneThread one = OneThread();
one.start;
if I create one or more thread howto add the ThreadGroup?
Regards
Richard
>OneThread one = OneThread()
? Use the new operator.
For ThreadGroup, you create the group first, then you add threads to the group, not the reverse, since you mat have noticed that ThreadGroup doesn't have an add method.
ThreadGroup tgroup = new ThreadGroup(unique_name);
//add threads to tgroup
Thread t = new Thread(tgroup, thread_name);
you must know that:
- there is no necessity for putting a thread in a group
- if you WANT or NEED to put it in a group, the procedure is the following one:
1 : create a threadgroup object
2 : when you create your thread (or thread extension) object, you have to call the constructor containing the threadgroup parameter
a reply was posted to show you how to proceed ; take a look at it
but keep in mind that there it's not an obligation to handle thread groups
example:
public class OneThread extends Thread {
public boolean state = true;
public OneThread() {
}
public void run() {
while( state != false ) {
System.out.println("Running");
wait(2000);
}
}
public void ThreadStop() {
state = false;
}
}
ThreadGroup thg = new ThreadGroup("etc");
OneThread one = OneThread(thg);
one.start;
This is correct? if I see you write for me.
Richard
that's no good, here is what you should do:
define a constructor:
public OneThread(ThreadGroup tg, String threadName) {
super(tg, threadName);
}
in your OneThread class
then, what you do is:
ThreadGroup myGrp = new ThreadGroup("mygroup");
OneThread t = new OneThread(myGrp, "mythread");
and you're done
