Java Data Type - 如何将Date转换为时间戳

import java.sql.Timestamp;
import java.util.Date;

public class Main {
  public static void main(String[] args) throws Exception {
    Date date = new Date();
    System.out.println("Format To times:");
    System.out.println(date.getTime());
    Timestamp ts = new Timestamp(date.getTime());
    System.out.println(ts);
  }
}