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How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)?
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"unknown" – Unknown JVM
As described in the HotSpot FAQ:
When writing Java code, how do I distinguish between 32 and 64-bit operation?
There's no public API that allows you to distinguish between 32 and 64-bit operation. Think of 64-bit as just another platform in the write once, run anywhere t...
How do I time a method's execution in Java?
...y, its "new-fashioned" because you used nanoTime, which wasn't added until java5
– John Gardner
Oct 7 '08 at 22:26
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What is the difference between canonical name, simple name and class name in Java Class?
In Java, what is the difference between these:
8 Answers
8
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Unicode equivalents for \w and \b in Java regular expressions?
... for the rewriting functions I discuss below is available here.
Update in Java 7
Sun’s updated Pattern class for JDK7 has a marvelous new flag, UNICODE_CHARACTER_CLASS, which makes everything work right again. It’s available as an embeddable (?U) for inside the pattern, so you can use it with ...
Convert timestamp in milliseconds to string formatted time in Java
... to import SimpleDateFormat, use the import as follows: import java.text.*;
– Naveen Kumar R B
Jan 4 '17 at 11:06
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How to format a duration in java? (e.g format H:MM:SS)
...duration in seconds using a pattern like H:MM:SS. The current utilities in java are designed to format a time but not a duration.
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redmine开源项目管理工具介绍 - 开源 & Github - 清泛网 - 专注IT技能提升
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提供一个更级别的基于项目版本的对于整个问题跟踪系统的概述，它可以帮助制定项目计划，管理项目开发。
4.新建问题
要创建新建的问题，你需要有新建问题的权限。Redmine默认有三种跟踪标签，即Bug、Feature、Support。
5....
C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...目录存在的一些方法。
一、FindFirstFile
在C++中可以调用系统的一些函数，但这种方法稍微显得复杂一些。
WIN32_FIND_DATA wfd;
bool rValue = false;
HANDLE hFind = FindFirstFile(strPath.c_str(), &wfd);
if ((hFind != INVALID_HANDLE_VALUE) && (wfd.dwFileAttribut...
VC中点击任务栏让窗口最小化问题解决 - C/C++ - 清泛网 - 专注C/C++及内核技术
...任务栏让窗口最小化问题解决一个MFC对话框程序，去掉了系统自带的最小化和关闭按钮，然后自己做了自绘按钮代替其功能。现在问题是，点击任务栏的程序图标，无法让窗口...一个MFC对话框程序，去掉了系统自带的最小化和关...
windows C++ gbk转为utf-8 - C/C++ - 清泛网 - 专注C/C++及内核技术
windows C++ gbk转为utf-8在windows与linux系统通过socket的传输数据里，如果传输中文字符，因为windows和linux使用的编码不同,所以需要将windows下的中文编码转换为 在windows与linux系统通过socket的传输数据里，如果传输中文字符，因为windo...