Two processes communicating using (memory locations “variables” or files).

Answer 1

here is my code but have an error !!
there are different classes.

// this class creates the variables we are going to use in the threads
public class Qs {

int n; //creating an integer value
boolean valueSet = false; //creating a boolean statement

//creating a method with a constraint that gets or return the integer value of the number of queues
synchronized int get() {
if(!valueSet)// if the value was not a false value , the process will wait in the queue
try {
wait();
} catch(InterruptedException e) {
System.out.println("exception handeled");
}
System.out.println("Got: " + n);
//if the value was false, it will specify the number of queues ahead and will notify the system
valueSet = false;
notify();
return n;
}


//this method doesn't return any value, it automatically either notifies or asks the process to wait in the queue
synchronized void put(int n) {
if(valueSet)
try {
wait();
} catch(InterruptedException e) {
System.out.println("exception handeled");
}
this.n = n;
valueSet = true;
System.out.println("Put: " + n);
notify();
}
}

public class P

implements Runnable { // creating an interface for the previous class
Qs q;
P(Qs q)

{
this.q = q;
new Thread(this, "Producer").start();
}
// running the first thread, this thread allows the process to wait in the queue
public void run() {
int i = 0;
while(true) {
q.put(i++);
}
}
}

public class C implements Runnable {
Qs q;
C(Qs q) { // creating an interface for the previous class
this.q = q;
new Thread(this, "Consumer").start();
}

// running the second thread, this thread allows the process to get the integer value and be in the waiting queue
public void run() {
while(true) {
q.get();
}
}
}

// this is the class which we use to test the output
public class tester {
public static void main(String args[]) {
Qs q = new Qs(); //creating an object
new P(q);
new C(q);
System.out.println("Press Control-C to stop.");
}
}

Answer 2

What do you expect for output?

It ran and gave only "put" and "got", and does not stop on control-C.