The updateAndGet() method of a AtomicReference class is used to atomically updates which updates the current value of the AtomicReference by applying the specified updateFunction operation on the current value. It takes an object of updateFunction interface as its parameter and applies the operation specified in the object to the current value. It returns the updated value.
public final V updateAndGet(UnaryOperator<V> updateFunction)
Parameters: This method accepts updateFunction which is a side-effect-free function.
Return value: This method returns the updated value.
Below programs illustrate the updateAndGet() method:
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