Java:如何为时间戳添加秒?

我无法为Java时间戳添加秒数。

我有这个,但是,它给了我相同的日期:

int sec = 600;

java.sql.Timestamp ts_from_ws = new java.sql.Timestamp(retry_date);

Calendar cal = Calendar.getInstance();

cal.setTimeInMillis(ts_from_ws.getTime());

cal.add(Calendar.SECOND,sec);

java.sql.Timestamp ts_new_date_ws = new java.sql.Timestamp(cal.getTime().getTime());

回答:

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 10:27:45.302

2011-11-07 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直接使用:

Timestamp original = ...;

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

later.setNanos(original.getNanos());

以上是 Java:如何为时间戳添加秒? 的全部内容, 来源链接: utcz.com/qa/429270.html

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