java:随机时间生成器 [英] java: Random Time generator

问题描述

如何生成随机的Time 值?例如:07:02:33、08:52:14 等.我知道如何生成随机数，但我不知道如何执行此操作.我想用随机值填充我的数据库列 TIME.

How do I generate random Time values? For example: 07:02:33, 08:52:14, etc. I know how to generate random numbers but I don't know how to do this. I want to fill my database column TIME with random values.

推荐答案

import java.util.Random;
import java.sql.Time;

final Random random = new Random();
final int millisInDay = 24*60*60*1000;
Time time = new Time((long)random.nextInt(millisInDay));

就您的目的而言，这可能就足够了.不要忘记，有些日子的长度不同，您可能需要为其添加测试用例(夏令时和闰秒).

For your purposes this might be enough. Don't forget that some days have different lengths for which you might need to add test cases (daylight savings and leap seconds).

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