The weakCompareAndSet() method of a AtomicReference class is used to atomically sets the value to newValue for AtomicReference if the current value is equal to expectedValue passed as parameter. This method update the value with memory semantics of reading as if the variable was declared volatile type of variable. This method returns true if set a new value to AtomicReference is successful.
public final boolean weakCompareAndSet(V expectedValue, V newValue)
Parameters: This method accepts expectedValue which is the expected value and newValue which is the new value to set.
Return value: This method returns true if successful.
Below programs illustrate the weakCompareAndSet() method:
Setting new value is successful = false New Value = 999
Value = GFG
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