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On localhost, how do I pick a free port number?
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See stackoverflow.com/a/2838309/3538289 for an example of sock.bind(('',0))
– cevaris
Nov 9 '15 at 3:12
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simple HTTP server in Java using only Java SE API
...e that the response.length() part in their example is bad, it should have been response.getBytes().length. Even then, the getBytes() method must explicitly specify the charset which you then specify in the response header. Alas, albeit misguiding to starters, it's after all just a basic kickoff exam...
console.writeline and System.out.println
What exactly is the technical difference between console.writeline and System.out.println ?
I know that System.out.println writes to standard output but is this not the same thing as the console?
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How to explore web-based Google Play in another country?
... answer. Here it is: Add the parameter gl=(countrycode).
For example, to see the list of top free business applications in your country, use this:
https://play.google.com/store/apps/category/BUSINESS/collection/topselling_free
Adding gl=ru gives you the list for Russia:
https://play.google.com/s...
Why is Spring's ApplicationContext.getBean considered bad?
...u can call applicationContext.getBean("myApplication") but you should not need to call getBean() anywhere else!
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How to get default gateway in Mac OSX
I need to retrieve the default gateway on a Mac machine. I know that in Linux route -n will give an output from which I can easily retrieve this information. However this is not working in Mac OSX(Snow Leopard).
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Rollback a Git merge
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Reverting a merge commit has been exhaustively covered in other questions. When you do a fast-forward merge, the second one you describe, you can use git reset to get back to the previous state:
git reset --hard <commit_before_merge>
You can find...
What is the difference between persist() and merge() in JPA and Hibernate?
What is the difference between persist() and merge() in Hibernate?
4 Answers
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动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...统也变得越来越复杂，我们知道它会分成很多很多层次，包括操作系统内核然后上面是各种系统软件，像数据库和 Web 服务器，再往上有脚本语言或者其他高级语言的虚拟机、解释器及即时（JIT）编译器，顶上则是应用层面的各...
Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?
I'm working on my usual projects on Eclipse, it's a J2EE application, made with Spring, Hibernate and so on. I'm using Tomcat 7 for this (no particular reason, I don't exploit any new feature, I just wanted to try that). Every time I debug my application, it happens that Eclipse debugger pops out li...