Java：如何为时间戳添加秒？

您拥有的代码适合我。作为简短但完整的程序：

import java.util.*;import java.sql.*;public class Test {    public static void main(String[] args) {        long retryDate = System.currentTimeMillis();        int sec = 600;        Timestamp original = new Timestamp(retryDate);        Calendar cal = Calendar.getInstance();        cal.setTimeInMillis(original.getTime());        cal.add(Calendar.SECOND, sec);        Timestamp later = new Timestamp(cal.getTime().getTime());        System.out.println(original);        System.out.println(later);    }}

输出：

2011-11-07 10:27:45.3022011-11-07 10:37:45.302

请注意相差10分钟，即600秒。

当然，这样会损失亚毫秒级的精度，这可能不太理想-最初与我通常使用的时间戳背道而驰-但这 确实 增加了秒数…

另一种选择是

Timestamp

Timestamp original = ...;Timestamp later = new Timestamp(original.getTime() + (sec * 1000L));later.setNanos(original.getNanos());