Answer Posted / modi[achir communication]

using wait() and notify() two different class threads
communicate with each other.
For example:

public class LoggingThread extends Thread {
private LinkedList linesToLog = new LinkedList();
private volatile boolean terminateRequested;

public void run() {
try {
while (!terminateRequested) {
String line;
synchronized (linesToLog) {
while (linesToLog.isEmpty())
linesToLog.wait();
line = (String) linesToLog.removeFirst();
}
doLogLine(line);
}
} catch (InterruptedException ex) {
Thread.currentThread().interrupt();
}
}

private void doLogLine(String line) {
// ... write to wherever
}

public void log(String line) {
synchronized (linesToLog) {
linesToLog.add(line);
linesToLog.notify();
}
}
}

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