Re: Accessing thread from called class

Yes, that will work. Make sure that you synchronize access to any
variables you're setting, though.

String command;

public synchronized void sendCommand(String command) {
     this.command = command;
}
private synchronized getCommand() {
     return command;
}

public void run() {
     // main loop
     while (true) {
         String command = getCommand(); // this is synchronized
     }
}

Actually, synchronization probably isn't technically required in the
example above (because assigning a String is atomic), but if you're
doing anything more complicated in sendCommand() it's a good idea.


Take a look at NIO. Can be helpful when there are many threads and good
performance is required. Not otherwise necessary, though.