class program9 extends Thread {
                private final int threadId;
                
                public program9(int id) {
                this.threadId = id;
                }
                
                public void run() {
                System.out.println("Thread " + threadId + " is running.");
                }
                
                public static void main(String[] args) {
                int numThreads = 5; // Number of threads to create
                
                // Create and start multiple threads
                for (int i = 1; i <= numThreads; i++) {
                program9 thread = new program9(i);
                thread.start();
                }
                }
                }