How two different class threads communicate with each other?. send example code

How two different class threads communicate with each
other?. send example code.

Question Posted / athishankar

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How two different class threads communicate with each other?. send example code...

Answer / puneet khanna

The threads in java follow Mutual exclusion( synchronized)
and co-operation;

for co-operation they need to talk to each other by messages
saying " i am waiting in the wait q anyone can acquire the
lock of the object" or" i have acquired the lock now by
notify() to the last thread who called wait() or by
notifyall() to all the threads who are in the wait q"

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How two different class threads communicate with each other?. send example code...

Answer / siva kumar g

By Using the concept called Inter Thread Communication

Is This Answer Correct ?

6 Yes

3 No

How two different class threads communicate with each other?. send example code...

Answer / 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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0 No

How two different class threads communicate with each other?. send example code...

Answer / tulasi prasad

Below I am showing the best example for ur Query.

class Rack
{
int n;
boolean avialable = false;
synchronized int get()
{
if(!avialable )
try
{
wait();
}
catch(InterruptedException e)
{
System.out.println("InterruptedException caught");
}
System.out.println("got:" + n);
avialable = false;
notify();
return n;
}

synchronized int put(int n)
{
if(avialable )
try
{
wait();
}
catch(InterruptedException e)
{
System.out.println("InterruptedException caught");
}
this.n = n;
avialable = true;
System.out.println("put:" + n);
notify();
return n;
}
}

class Producer implements Runnable
{
Rack k;
Producer(Rack k)
{
this.k = k;
new Thread(this, "Producer").start();
}
public void run()
{
int i = 1;
while(true)
{
k.put(i++);
}
}
}
class Consumer implements Runnable
{
Rack k;
Consumer(Rack k)
{
this.k = k;
new Thread(this, "Consumer").start();
}
public void run()
{
while(true)
{
k.get();
}
}
}
class ProducerConsumerProblem
{
public static void main(String args[])
{
Rack k = new Rack();
new Producer(k);
new Consumer(k);
System.out.println("press control - c to stop. ");
}
}

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1 Yes

0 No

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