How does Thread impact performance or memory usage?

Threads in Java can significantly impact performance and memory usage. When you create multiple threads, you can achieve better resource utilization and responsiveness in applications. However, creating too many threads can lead to context switching overhead and increased memory consumption due to the resources each thread requires.

In a multi-threaded application, threads can compete for CPU time, which can lead to thread contention, making the program slower than a single-threaded implementation. It is essential to balance the number of threads to optimize performance and memory usage without overwhelming the system.

Here’s an example of how to create and manage threads in Java:

class MyRunnable implements Runnable {
            public void run() {
                System.out.println("Thread is running: " + Thread.currentThread().getName());
            }
        }

        public class ThreadExample {
            public static void main(String[] args) {
                for (int i = 0; i < 5; i++) {
                    Thread thread = new Thread(new MyRunnable());
                    thread.start();
                }
            }
        }