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What is the difference between a static and a non-static initialization code block
My question is about one particular usage of static keyword. It is possible to use static keyword to cover a code block within a class which does not belong to any function. For example following code compiles:
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What's the difference between encoding and charset?
I am confused about the text encoding and charset. For many reasons, I have to
learn non-Unicode, non-UTF8 stuff in my upcoming work.
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Shell - How to find directory of some command?
I know that when you are on shell, the only commands that can be used are the ones that can be found on some directory set on PATH.
Even I don't know how to see what dirs are on my PATH variable (and this is another good question that could be answered), what I'd like to know is:
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How does this program work?
It displays a 0 !! How is that possible? What is the reasoning?
13 Answers
13
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Design patterns to avoid [closed]
A lot of people seem to agree, that the Singleton pattern has a number of drawbacks and some even suggest avoiding the pattern entirely. There's an excellent discussion here . Please direct any comments about the Singleton pattern to that question.
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Why does JPA have a @Transient annotation?
Java has the transient keyword. Why does JPA have @Transient instead of simply using the already existing java keyword?
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AtomicInteger lazySet vs. set
What is the difference between the lazySet and set methods of AtomicInteger ? The documentation doesn't have much to say about lazySet :
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What is the difference between the | and || or operators?
I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable?
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How to determine if a number is a prime with regex?
I found the following code example for Java on RosettaCode :
4 Answers
4
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How can you represent inheritance in a database?
I'm thinking about how to represent a complex structure in a SQL Server database.
8 Answers
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