Shared Memory

Shared memory allows threads to communicate by reading and writing to shared variables.

Synchronization is crucial to avoid race conditions where multiple threads modify shared data concurrently.

public class SharedMemory {
private int counter = 0;

public synchronized void increment() {
counter++;
    }

public synchronized int getCounter() {
return counter;
    }

public static void main(String[] args) throws InterruptedException {
SharedMemory sharedMemory = new SharedMemory();
Thread[] threads = new Thread[10];

for (int i = 0; i < 10; i++) {
threads[i] = new Thread(() -> {
for (int j = 0; j < 100; j++) {
sharedMemory.increment();
System.out.println( Thread.currentThread().getName() + " Counter value: " + sharedMemory.getCounter() );
                }
            });
threads[i].start();
        }

for (Thread thread : threads) {
thread.join();
        }

System.out.println("Final counter value: " + sharedMemory.getCounter());  // Should print 1000
}
}

Thread-1 Counter value: 2

Thread-1 Counter value: 11

Thread-4 Counter value: 5

Thread-8 Counter value: 9