import java.util.Vector;
class Producer extends Thread {
static final int MAX = 7;
private Vector messages = new Vector();
@Override
public void run()
{
try {
while (true) {
putMessage();
sleep(1000);
}
}
catch (InterruptedException e) {
}
}
private synchronized void putMessage()
throws InterruptedException
{
while (messages.size() == MAX)
wait();
messages.addElement(new java.util.Date().toString());
notify();
}
public synchronized String getMessage()
throws InterruptedException
{
notify();
while (messages.size() == 0)
wait();
String message = (String)messages.firstElement();
messages.removeElement(message);
return message;
}
}
class Consumer extends Thread {
Producer producer;
Consumer(Producer p)
{
producer = p;
}
@Override
public void run()
{
try {
while (true) {
String message = producer.getMessage();
System.out.println("Got message: " + message);
sleep(2000);
}
}
catch (InterruptedException e) {
}
}
public static void main(String args[])
{
Producer producer = new Producer();
producer.start();
new Consumer(producer).start();
}
}