The compareAndExchangeRelease() 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 which is referred to as the witness value is equal to the expectedValue. This method will return the witness value, which will be the same as the expected value. This method updates the value and ensures that prior loads and stores are not reordered after this access.
public final boolean compareAndExchangeRelease( 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 the witness value, which will be the same as the expected value if successful.
Below programs illustrate the compareAndExchangeRelease() method:
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