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PCFixed.java
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PCFixed.java
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package chapter11;
//A correct implementation of a Producer and Consumer..
class Q2 {
int n;
boolean valueSet = false;
synchronized int get() {
while (!valueSet)
try {
wait();
} catch (InterruptedException e) {
System.out.println("InterruptedException caught");
}
System.out.println("Got :" + n);
valueSet = false;
notify();
return n;
}
synchronized void put(int n) {
while (valueSet)
try {
wait();
} catch (InterruptedException e) {
System.out.println("InterruptedException caught");
}
this.n = n;
valueSet = true;
System.out.println("Put :" + n);
notify();
}
}
class Producer2 implements Runnable {
Q q;
Thread t;
public Producer2(Q q) {
this.q = q;
t = new Thread(this, "Producer");
}
public void run() {
int i = 0;
while (true) {
q.put(i++);
}
}
}
class Consumer2 implements Runnable {
Q q;
Thread t;
public Consumer2(Q q) {
this.q = q;
t = new Thread(this, "Consumer");
}
public void run() {
while (true) {
q.get();
}
}
}
public class PCFixed {
public static void main(String[] args) {
Q q = new Q();
Producer2 p = new Producer2(q);
Consumer2 c = new Consumer2(q);
//start the threads..
p.t.start();
c.t.start();
System.out.println("Press Control-C to stop");
}
}