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JRuby on Rails vs. Ruby on Rails, what's difference?
...s Ruby is a C implementation.
Key features to note are:
JRuby runs on Java VM's and it's either compiled or interpreted down to Java byte code.
JRuby can integrate with Java code. If you have Java class libraries (.jar's), you can reference and use them from within Ruby code with JRuby. In the ...
Struct like objects in Java
Is it completely against the Java way to create struct like objects?
20 Answers
20
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About Python's built in sort() method
...t file for a textual explanation, results, etc etc.
If you prefer reading Java code than C code, you could look at Joshua Bloch's implementation of timsort in and for Java (Joshua's also the guy who implemented, in 1997, the modified mergesort that's still used in Java, and one can hope that Java w...
What GUI libraries are the JetBrains using?
I am somewhat new to Java and am enjoying using IntelliJ IDE developed by the JetBrains team.
1 Answer
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Why does Eclipse Java Package Explorer show question mark on some classes?
In the Eclipse Helios Java Package Explorer, I see the Java class icons display a small question mark to the right of the 'J', something like [J?]. This icon is shown on each class within one package in my project, but I cannot find an explanation for this in the documentation.
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Bytecode features not available in the Java language
Are there currently (Java 6) things you can do in Java bytecode that you can't do from within the Java language?
9 Answers
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In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
I'm working with some example java code for making md5 hashes. One part converts the results from bytes to a string of hex digits:
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How to set specific java version to Maven
On my machine I have two java versions installed: (1.6 and 1.7 installed manually by me). I need both of them for different projects. But for Maven I need 1.7, now my Maven uses 1,6 java version, how can I set Maven to use 1.7?
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与复制构造函数相关的错误.例如:0x77D9FCAA (ntdll.dll) (prog31.exe 中)处...
...然需要定义自己的复制构造函数和赋值操作符解释。重新运行程序，即可得到正确结果并避免堆损坏错误。
复制构造函数 堆损坏
Java Persistence / JPA: @Column vs @Basic
...g that Basic is designed for primitive fields
http://en.wikibooks.org/wiki/Java_Persistence/Basic_Attributes
A basic attribute is one where the attribute class is a simple type such as String, Number, Date or a primitive. A basic attribute's value can map directly to the column value in the databas...