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How to pattern match using regular expression in Scala?
... @rakensi No. val r = "[A-Ca-c]".r ; 'a' match { case r() => } . scala-lang.org/api/current/#scala.util.matching.Regex
– som-snytt
Mar 9 '15 at 23:28
3
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Playing .mp3 and .wav in Java?
How can I play an .mp3 and a .wav file in my Java application? I am using Swing. I tried looking on the internet, for something like this example:
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Maven Install on Mac OS X
...lly comes with Maven 3 built in.
If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it.
Assuming qualifications are met, run mvn -version and see some output like this:
Apache Maven 3.0.3 (r1075438; 2011-02-28 12:31:09-0500...
StringUtils 字符串工具扩展：强大的文本处理工具集 · App Inventor 2 中文网
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介绍
StringUtils 扩展提供了基于 Apache Commons Lang 的文本处理工具函数。它提供了丰富的字符串操作方法，包括字符检测、文本提取、填充、验证等功能。
主要功能
字符和大小写检测
文本提...
Using Java with Nvidia GPUs (CUDA)
I'm working on a business project that is done in Java, and it needs huge computation power to compute business markets. Simple math, but with huge amount of data.
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Java NIO FileChannel versus FileOutputstream performance / usefulness
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My experience with larger files sizes has been that java.nio is faster than java.io. Solidly faster. Like in the >250% range. That said, I am eliminating obvious bottlenecks, which I suggest your micro-benchmark might suffer from. Potential areas for investigating:
The...
Can you write virtual functions / methods in Java?
Is it possible to write virtual methods in Java, as one would do in C++?
6 Answers
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How do I check if a file exists in Java?
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Using java.io.File:
File f = new File(filePathString);
if(f.exists() && !f.isDirectory()) {
// do something
}
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javac option to compile all java files under a given directory recursively
I am using the javac compiler to compile java files in my project. The files are distributed over several packages like this: com.vistas.util , com.vistas.converter , com.vistas.LineHelper , com.current.mdcontect .
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Why is spawning threads in Java EE container discouraged?
One of the first things I've learned about Java EE development is that I shouldn't spawn my own threads inside a Java EE container. But when I come to think about it, I don't know the reason.
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