AtomicReferenceArray compareAndSet() method in Java with Examples
The compareAndSet() method of a AtomicReferenceArray class is used to atomically sets the value of index i of AtomicReferenceArray to newValue, if the current value at index i of AtomicReferenceArray object is equal to the expectedValue.This method will return true if update is successful.
public final boolean compareAndSet( int i, E expectedValue, E newValue)
Parameters: This method accepts:
- i which is an index of AtomicReferenceArray to perform the operation,
- expectedValue which is the expected value and
- newValue which is the new value to set.
Return value: This method returns true if successful and false return indicates that the actual value was not equal to the expected value.
Below programs illustrate the compareAndSet() method:
Operation at index 0: false Operation at index 0: false
Operation at index 0: true New value at index 0: GEEKS FOR GEEKS Operation at index 1: true New value at index 1: JAVA SCRIPT
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