This Java program implements the producer-consumer problem using inter-thread communication. A LabPro17 class is used to synchronize access to a shared variable between producer and consumer threads. The producer thread calls the put() method to set the shared variable and the consumer thread calls the get() method to retrieve it. Synchronization is achieved using wait() and notify() methods to coordinate access between the producer and consumer.

1. JAVA WEEK9(B)
/* Week 9 : b) Write a Java program that correctly implements producer consumer
problem using the concept of inter thread communication. */
class LabPro17
{
int n;
boolean vs = false;
synchronized int get()
{
if(!vs)
try{wait();}
catch(InterruptedException e)
{ System.out.println("InterruptedException caught");}
System.out.println("got:" + n);
vs = false;
notify();
return n;
}
synchronized int put(int n)
{
if(vs)
try{wait();}
catch(InterruptedException e)
{ System.out.println("InterruptedException caught");}
this.n = n;
vs = true;
System.out.println("put:" + n);
notify();
return n;
}
}
class Producer implements Runnable
{
LabPro17 k;
Producer(LabPro17 k)
{
this.k = k;
new Thread(this, "Producer").start();
}
public void run()
{
int i = 0;
while(true)
{k.put(i++);}
}
}
class Consumer implements Runnable
{
LabPro17 k;
Consumer(LabPro17 k)
{
this.k = k;
new Thread(this, "Consumer").start();
}
public void run()
{
while(true)
{k.get();}
}
}
class PCFixed
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2. JAVA WEEK9(B)
{
public static void main(String args[])
{
LabPro17 k = new LabPro17();
new Producer(k);
new Consumer(k);
System.out.println("press control - c to stop. ");
}
}
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