Thread in Java
In Java, a thread is a separate path of execution within a program. Threads allow multiple tasks to run concurrently, enabling the program to perform multiple operations simultaneously. Threads are considered lightweight because they share the same address space, meaning they can access the same variables and data structures within the program.
Using threads, developers can design applications that perform tasks concurrently, making the program more efficient and responsive. For example, in a web server application, each incoming client connection can be handled by a separate thread, allowing the server to serve multiple clients simultaneously without blocking the main program execution.
Threads can communicate and share data with each other, but developers need to be cautious about thread safety and synchronization to avoid data corruption or race conditions. Proper synchronization mechanisms and locks are used to ensure that threads access shared resources in a coordinated manner, preventing conflicts and data inconsistencies.
Java provides built-in support for threads through the
java.lang.Thread class and the
java.lang.Runnable interface, which allows developers to create and manage threads effectively. Threads play a important role in concurrent programming, enabling the development of multi-threaded applications that take full advantage of modern multi-core processors and improve overall system performance.