NumberPrinting.java

import java.io.*;

public class NumberPrinting {
    public static void main(String[] args) {
        Thread thread1 = new Thread(new NumberPrinter(1, 10));
        Thread thread2 = new Thread(new NumberPrinter(90, 100));
        thread1.start();
        thread2.start();
    }

    static class NumberPrinter implements Runnable {
        private int start;
        private int end;

        public NumberPrinter(int start, int end) {
            this.start = start;
            this.end = end;
        }

        public void run() {
            printNumbers();
        }

        private void printNumbers() {
            for (int i = start; i <= end; i++) {
                System.out.println(Thread.currentThread().getName() + ":" + i);
                try {
                    Thread.sleep(500);
                    // Adding delay for better visualization
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}