Re: Accessing thread from called class
"Chris" <spam_me_not@goaway.com> wrote in message
news:4568bf84$0$26889$9a6e19ea@news.newshosting.com...
Do I just implement eg a SendCommand() function (or whatever name you
like)
in the ThreadNetworkHandler class and call that?
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.
2. Another question on same sort of topic. Should I have one thread for
incoming socket communication stream and another for the outgoing?
Take a look at NIO. Can be helpful when there are many threads and good
performance is required. Not otherwise necessary, though.
I have this class:
// class ThreadNetworkhandler
class ThreadNetworkHandler extends Thread
{
private CubaThread m_Object;
// Constructor
ThreadNetworkHandler(CubaThread obj)
{
m_Object = obj;
}
String command;
public synchronized void sendCommand(String command)
{
this.command = command;
}
private synchronized String getCommand()
{
return command;
}
public void run()
{
try
{
for (;;)
{
Toolkit.getDefaultToolkit().beep();
Thread.currentThread().sleep(2000);
String command = getCommand(); // this is synchronized
m_Object.lst.addItem("You issued: " + command);
}
}
catch(java.lang.InterruptedException e)
{ /* no problem, end of wait */
}
}
}
In my applet I do this:
t = new ThreadNetworkHandler(this);
t.start();
Where t is a member variable of type Thread.
But if I do this:
t.sendCommand("My Command\r\n");
I get this error:
CubaThread.java:44: cannot find symbol
symbol : method sendCommand(java.lang.String)
location: class java.lang.Thread
t.sendCommand("My command\r\n");
So how do I call sendCommand?
Angus