What is compare-and-swap in Java?
An example of an AI chatbot conversation about compare-and-swap in Java.
Can you explain what compare-and-swap is in Java?
Compare-and-swap (CAS) is an atomic operation used in concurrent programming to achieve synchronization.
How does it work in Java specifically?
In Java, CAS is implemented using the AtomicReference class, which allows you to update a value only if it matches an expected value.
Can you give me a code example?
Sure! Here's a simple example:
AtomicReference<Integer> atomicInt = new AtomicReference<>(0);
int expectedValue = 0;
int newValue = 1;
boolean wasUpdated = atomicInt.compareAndSet(expectedValue, newValue);
What are the advantages of using compare-and-swap?
CAS helps avoid locking, which can lead to better performance in multi-threaded applications.
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