In Java, threads are instances of the
Thread class or objects implementing the
Runnable interface. A Java program itself is a single thread called the “main” thread.
2. Creating Threads
a. Extending the
b. Implementing the
3. Thread Lifecycle
Threads in Java go through different states, including
TERMINATED. Understanding these states is crucial for effective thread management.
4. Thread Synchronization
In a multithreaded environment, synchronization is essential to avoid data inconsistency issues. Java provides the
synchronized keyword and the
lock framework for this purpose.
a. Synchronized Method
b. Lock Framework
5. Thread Pools
Creating and managing threads individually can be resource-intensive. Java provides the
ExecutorService framework to manage thread pools efficiently.
Understanding threads in Java is crucial for building concurrent and scalable applications. This tutorial covered the basics of creating threads, managing their lifecycle, synchronizing access to shared resources, and using thread pools. Multithreading is a powerful tool, but it requires careful consideration to avoid common pitfalls like race conditions and deadlocks.