What are best practices for working with AtomicInteger / AtomicReference?

When working with AtomicInteger and AtomicReference in Java, it's important to follow best practices to ensure thread-safety and optimal performance. These classes are part of the java.util.concurrent.atomic package and are designed to support lock-free thread-safe programming.

Best Practices for AtomicInteger

Use AtomicInteger for counters and values that need to be modified by multiple threads.
Utilize methods like incrementAndGet(), decrementAndGet(), and compareAndSet() for atomic updates.
Minimize the exposure of the underlying integer by keeping the AtomicInteger private.
Avoid using get() and then calling set() in multiple operations, as this can lead to inconsistencies.

Best Practices for AtomicReference

Use AtomicReference when you need to manage references to objects and ensure thread-safety.
Use get() and set() methods for straightforward replacements.
Employ compareAndSet() to perform atomic updates based on the current state.
Be cautious about mutable objects held by AtomicReference; ensure that these objects are also designed for thread-safety.

Example Code


        // Example using AtomicInteger
        import java.util.concurrent.atomic.AtomicInteger;

        public class AtomicIntegerExample {
            private AtomicInteger count = new AtomicInteger(0);

            public void increment() {
                count.incrementAndGet();
            }

            public int getCount() {
                return count.get();
            }
        }

        // Example using AtomicReference
        import java.util.concurrent.atomic.AtomicReference;

        public class AtomicReferenceExample {
            private AtomicReference name = new AtomicReference<>("Initial Name");

            public void updateName(String newName) {
                name.set(newName);
            }

            public String getName() {
                return name.get();
            }
        }

AtomicInteger AtomicReference Java Concurrency Thread-safety Best Practices Performance

What are best practices for working with AtomicInteger / AtomicReference?

Best Practices for AtomicInteger

Best Practices for AtomicReference

Example Code

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What are best practices for working with AtomicInteger / AtomicReference?

Best Practices for AtomicInteger

Best Practices for AtomicReference

Example Code

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