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TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...大并发的短链接下，TIME_WAIT 就会太多，这也会消耗很多系统资源。只要搜一下，你就会发现，十有八九的处理方式都是教你设置两个参数，一个叫tcp_tw_reuse，另一个叫tcp_tw_recycle的参数，这两个参数默认值都是被关闭的，后者rec...
How to get year, month, day, hours, minutes, seconds and milliseconds of the current moment in Java?
...th, day, hours, minutes, seconds and milliseconds of the current moment in Java? I would like to have them as Strings .
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技术人员如何去面试？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...更精确了解面试官想通过这道题目考查你的实战能力还是系统知识组织能力。
封闭问题回答就是知道就描述清晰就行了，不用啰嗦说很多没用的，如果不知道就明确表示不知道就好了。开放式问题，回答方式和策略就很多，一...
代码块超过1.2w编译apk报错问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...午 com.google.appengine.tools.development.ApiProxyLocalImpl log
严重: javax.servlet.ServletContext log: Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract long com.google.appinventor.shared.rpc.project.ProjectService.s...
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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京东618：算法让UV价值提升200%+，用智能卖场缩短购物路径 - 更多技术 - 清...
...计划、智慧物流、智慧数据等多种产品形态，对京东现有系统，从架构层的基础设施、数据平台、计算分析，到业务层的精准营销、智慧选品、个性化投放、智慧物流等方面，进行有效渗透及优化，最终形成在计算能力和数据质...
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
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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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