What is synchronization?-

In the context of Core Java, synchronization refers to the coordination of multiple threads to ensure orderly and controlled access to shared resources. When multiple threads are executing concurrently, synchronization becomes crucial to prevent data corruption or inconsistent states in the program.

In Java, you can achieve synchronization using the synchronized keyword. There are two main ways to use synchronization:

1. Synchronized methods: You can declare a method as synchronized by using the synchronized keyword in the method signature. When a thread invokes a synchronized method, it automatically acquires the lock for that method’s object, preventing other threads from executing synchronized methods on the same object simultaneously.
   java

   public synchronized void synchronizedMethod() {
// Code that requires synchronization
}

2. Synchronized blocks: You can use synchronized blocks to explicitly specify a block of code that should be executed by only one thread at a time. This is achieved by acquiring the lock associated with the specified object.
   java

   Object lockObject = new Object();

   // …

   synchronized (lockObject) {
   // Code that requires synchronization
   }

Synchronization is crucial in scenarios where multiple threads access shared resources to avoid race conditions and maintain data consistency. Without proper synchronization, unpredictable behavior and data corruption may occur in a multi-threaded environment.