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The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path [duplicate]

I have a project created by Maven integration in Eclipse. All work fine, but in the work space in all JSP files have this: ...
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How do I create an immutable Class?

I am working on creating an immutable class. I have marked all the properties as read-only. 6 Answers ...
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How can I programmatically create a new cron job?

... It's always worked well for me. You should consider a slightly more sophisticated script that can do three things. Append a crontab line; assuring that it didn't exist. Adding when it already exists is bad. Remove the crontab line. Per...
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How to use > in an xargs command?

... that grep to a separate file. My guess would have been to do something like this 3 Answers ...
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When should I use File.separator and when File.pathSeparator?

... edited Aug 26 '13 at 12:24 Kaadzia 1,1631111 silver badges3131 bronze badges answered May 12 '11 at 0:19 ...
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Java ArrayList how to add elements at the beginning

...; 10) list.remove(list.size() - 1); However, you might want to rethink your requirements or use a different data structure, like a Queue EDIT Maybe have a look at Apache's CircularFifoQueue: CircularFifoQueue is a first-in first-out queue with a fixed size that replaces its oldest elemen...
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BaseException.message deprecated in Python 2.6

... use str(my) or (less elegant) my.args[0] to access the custom message. Background In the newer versions of Python (from 2.6) we are supposed to inherit our custom exception classes from Exception which (starting from Python 2.5) inherits from BaseException. The background is described in detail in ...
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List of installed gems?

... >> abstract 1.0.0 # >> actionmailer 3.0.5 # >> actionpack 3.0.5 # >> activemodel 3.0.5 # >> activerecord 3.0.5 Here's an updated way to get a list: require 'rubygems' def local_gems Gem::Specification.sort_by{ |g| [g.name.downcase, g.version] }.group_by{ |g| g...
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How do I include a pipe | in my linux find -exec command?

This isn't working. Can this be done in find? Or do I need to xargs? 6 Answers 6 ...
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How to return a value from a Form in C#?

...hows another form (frmImportContact) via ShowDialog() when a button is clicked. 9 Answers ...