我想让一个数字每x毫秒增加一次，但Thread.sleep()一次完成了所有操作

public class NumberIncrementer implements Runnable {
    private int number;
    private int incrementInterval;

    public NumberIncrementer(int incrementInterval) {
        this.incrementInterval = incrementInterval;
    }

    @Override
    public void run() {
        while (true) {
            // 增加数字
            number++;

            try {
                // 线程休眠
                Thread.sleep(incrementInterval);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public int getNumber() {
        return number;
    }
}

public class Main {
    public static void main(String[] args) {
        int incrementInterval = 1000; // 每秒增加一次
        NumberIncrementer incrementer = new NumberIncrementer(incrementInterval);
        Thread thread = new Thread(incrementer);
        thread.start();

        // 通过调用incrementer.getNumber()方法获取当前数字的值
    }
}