What is the role of the synchronization mechanism in multithreaded applications?

The synchronization mechanism in multithreaded applications ensures correct access to shared resources, preventing race conditions and maintaining data integrity. Without synchronization, multiple threads can modify the same data simultaneously, leading to errors.

In Java, the synchronized keyword, locking objects, or classes from the java.util.concurrent package are often used for synchronization. For example:

public class Counter {
    private int count = 0;

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

    public int getCount() {
        return count;
    }
}

Here, the increment method is synchronized so that only one thread can modify count at a time.