Comment on Tutorial - wait(), notify() and notifyAll() in Java - A tutorial By Jagan
Comment Added by : Hdm-Student
Comment Added at : 2010-06-16 08:10:51
Comment on Tutorial : wait(), notify() and notifyAll() in Java - A tutorial By Jagan
Hello,
your solution is kinda overkill.
When used correctly, notify and wait don't need workarounds such as valueSet.
Here's the improved version:
----------------------
package producer;
// A correct implementation of a producer and consumer.
class Q {
int n;
synchronized int get() {
try {
notify();
wait();
} catch (InterruptedException e) {
System.out.println("InterruptedException caught");
}
System.out.println("Got: " + n);
return n;
}
synchronized void put(int n) {
try {
notify();
wait();
} catch (InterruptedException e) {
System.out.println("InterruptedException caught");
}
this.n = n;
System.out.println("Put: " + n);
}
}
public class Producer implements Runnable {
Q q;
Producer(Q q) {
this.q = q;
new Thread(this, "Producer").start();
}
public void run() {
int i = 0;
while (true) {
q.put(i++);
}
}
}
class Consumer implements Runnable {
Q q;
Consumer(Q q) {
this.q = q;
new Thread(this, "Consumer").start();
}
public void run() {
while (true) {
q.get();
}
}
}
class PCFixed {
public static void main(String args[]) {
Q q = new Q();
new Producer(q);
new Consumer(q);
System.out.println("Press Control-C to stop.");
}
}
-------------------------
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