Client TCP in Java

**baltimore** · 07-31-2007, 08:49 PM

Hi, I can get a tcp server to communicate with a client, and thread this to simultaneously communicate with more clients, but i don't know how to get the clients to be able to hear each other, i cant seem to even loop through clients to send to when i want the server to reply

Does anyone know how to do this, or have a simple tutorial on it?
Threads really confuse me.

Thanks.

**Sircedric88** · 08-01-2007, 02:29 AM

Sorry, I am a bit new with Java, and I hope you don't mind me asking, but what's TCP?

May I suggest a linked list? where each client acts as a node?

**mathias** · 08-07-2007, 06:34 AM

Please check this code:

Java Code:

public class rServerRegistrar {

	public Thread[] cthreads;

	public rServerRegistrar(Thread thr) {
		cthreads=new Thread[1];
		cthreads[0]=thr;
	}
	
	public void registerThread(Thread newthread) {
		Thread[] tempthreads=new Thread[cthreads.length+1];
		for(int i=0;i<cthreads.length;i++) {
			tempthreads[i]=cthreads[i];
		}
		tempthreads[cthreads.length]=newthread;
		cthreads=tempthreads;
	}
	
	public void deregisterThread(Thread delthread) {
		Thread[] tempthreads=new Thread[cthreads.length-1];
		int count=0;
		for(int i=0;i<cthreads.length;i++) {
			if(delthread.getName()!=cthreads[i].getName()) {
				tempthreads[count]=cthreads[i];
				count++;
			}
		}
		cthreads=tempthreads;
	}
	
	private void updateThreads() {
		int count=0; // First count the number of alive threads.
		for(int i=0;i<cthreads.length;i++) {
			if(cthreads[i].isAlive()) count++;
		}
		Thread[] temp=new Thread[count];
		count=0;
		for(int i=0;i<cthreads.length;i++) {
			if(cthreads[i].isAlive()) {
				temp[count]=cthreads[i];
				count++;
			}
		}
	}
	
	public Thread[] getClientThreads() {
		updateThreads(); // Return all except first thread.
		Thread[] temp=new Thread[cthreads.length-1];
		for(int i=0;i<temp.length;i++) {
			temp[i]=cthreads[i+1];
		}
		return temp;
	}

}