Multi-threading in Java allows applications to split responsibilities, delegate tasks, and handle complexity more efficiently.
Threads in Java are created by extending the Thread class or implementing the Runnable interface, providing flexibility for different use cases.
Thread states in Java include NEW, RUNNABLE, RUNNING, TIMED_WAITING, and TERMINATED, each representing a different stage of thread execution.
Java provides synchronization mechanisms like locks and inter-thread communication to control access to shared resources and avoid data inconsistencies.
ExecutorService in Java offers a high-level API for managing a pool of worker threads efficiently, improving performance and resource management.
Future in Java represents the result of an asynchronous computation, allowing for tasks to be executed and results retrieved at a later time.
ReentrantLock in Java provides full manual control over locking behavior, allowing the same thread to acquire the lock multiple times without getting blocked.
CyclicBarrier is used to synchronize multiple threads at a common barrier point before proceeding together, helpful in scenarios where coordination is required.
The volatile keyword in Java ensures immediate visibility of variable changes across threads, while AtomicInteger provides atomicity for concurrent updates without explicit synchronization.
Java's concurrent utilities offer powerful abstractions for handling multithreading scenarios efficiently and effectively.