Thread.sleep(1000)

public class Wait {

    public static void main(String[] args) {
        System.out.println(System.currentTimeMillis());

        //程序暂停1000ms
        try {
            Thread.sleep();
        } catch (Exception e) {
            System.exit();// 退出程序
        }

        System.out.println(System.currentTimeMillis());
    }

}