Thread to Print Even and Odd Numbers

package q19684;
import java.util.Scanner;

class NumberPrinter implements Runnable {
	private static final Object lock = new Object();
    private static int number = 1;
    private final int threadType;
    private final int maxNumber;

    public NumberPrinter(int threadType, int maxNumber) {
        this.threadType = threadType;
        this.maxNumber = maxNumber;
	}


		
    @Override
    public void run() {
        while (true) {
            synchronized (lock) {
                while (number <= maxNumber && number % 2 != threadType) {
                    try {
                        lock.wait();
                    } catch (InterruptedException e) {
                        Thread.currentThread().interrupt();
                        return;
                    }
                }

                if (number > maxNumber) {
                    lock.notifyAll();
                    break;
                }

                System.out.println(Thread.currentThread().getName() + ": " + number);
                number++;
                lock.notifyAll();
            }
        }
    }
}

// Driver code is given below for your reference

public class EvenOddNumberPrinter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int maxNumber = 0;
        boolean validInput = false;

        while (!validInput) {
            System.out.println("Enter the maximum number to print:");
            String input = scanner.nextLine();

            try {
                maxNumber = Integer.parseInt(input);
                if (maxNumber >= 1) {
                    validInput = true;
                } else {
                    System.out.println("Please enter a number greater than or equal to 1.");
                }
            } catch (NumberFormatException e) {
                System.out.println("Invalid input. Please enter a valid number.");