When two or more threads need to access to a shared resource they need some way to ensure that the resource will be used by only one thread at a time. The process by which this achieved is called synchronization.
The general form of synchronize statement :
Synchronized (object) {
// statement to be synchronized
}
here the object is a reference to the object being synchronized. A synchronized block ensures that a call to a method that is member of object occurs only after the current thread has successfully entered the object’s moniter
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