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What is the point of “final class” in Java?

I am reading a book about Java and it says that you can declare the whole class as final . I cannot think of anything where I'd use this. ...
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Can a shell script set environment variables of the calling shell? [duplicate]

I'm trying to write a shell script that, when run, will set some environment variables that will stay set in the caller's shell. ...
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Static method behavior in multi-threaded environment in java

...comes across this and is newish to Java. Here goes.. Memory in java is split up into two kinds - the heap and the stacks. The heap is where all the objects live and the stacks are where the threads do their work. Each thread has its own stack and can't access each others stacks. Each thread also ha...
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How to choose between Hudson and Jenkins? [closed]

It took me an hour or so to work out Hudson has only branched recently (Jan/2011) I have no idea how rapid the change of each branch is now, but more importantly, what is the direction each branch is taking and what are key points so one could make a choice between which to go with? ...
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MySQL Error 1093 - Can't specify target table for update in FROM clause

I have a table story_category in my database with corrupt entries. The next query returns the corrupt entries: 16 Answers...
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Which HTML5 reset CSS do you use and why? [closed]

... Real talk: Despite the markdowns kaikai is right, you only need to reset *padding & margin to 0. Though unfortunately 99% of us do not have resources or man power to keep up with the hundreds of browser versions out there. So a reset s...
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Can I add extension methods to an existing static class?

...ds require an instance variable (value) for an object. You can however, write a static wrapper around the ConfigurationManager interface. If you implement the wrapper, you don't need an extension method since you can just add the method directly. public static class ConfigurationManagerWrapper ...
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max value of integer

In C, the integer (for 32 bit machine) is 32 bits, and it ranges from -32,768 to +32,767. In Java, the integer(long) is also 32 bits, but ranges from -2,147,483,648 to +2,147,483,647. ...
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Advantage of switch over if-else statement

What's the best practice for using a switch statement vs using an if statement for 30 unsigned enumerations where about 10 have an expected action (that presently is the same action). Performance and space need to be considered but are not critical. I've abstracted the snippet so don't hate m...
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Set cURL to use local virtual hosts

Using Apache or Ngnix I always create development sites based on real projects such as http://project1.loc which, after adding to my .hosts file, the browser has no problem using. ...