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Read stream twice
... the contents of the InputStream to a byte array, and then repeatedly read from the byte array using a ByteArrayInputStream. E.g.:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
org.apache.commons.io.IOUtils.copy(in, baos);
byte[] bytes = baos.toByteArray();
// either
while (needToReadA...
How to force 'cp' to overwrite directory instead of creating another one inside?
...rce directory does not. This is not an expected behavior of copying files from one place to the other. It only overwrites in the target things that are also in the source, it doesn't touch anything in the target that is not in the source. You can clean the target folder by prepending a command to...
How can I remove the outline around hyperlinks images?
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For Remove outline for anchor tag
a {outline : none;}
Remove outline from image link
a img {outline : none;}
Remove border from image link
img {border : 0;}
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How to generate a random int in C?
...licated. Here's a reason: time() only changes once per second. If you seed from time(), for each call to rand(), then you will get the same value for every call during a single second. But the bigger reason is that the properties of rand() and functions like it are known best for the use case where ...
Efficient way to remove ALL whitespace from String?
...whitespace (including newlines) and doing this (XML is the string received from the web request):
16 Answers
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What is the difference between JSF, Servlet and JSP?
...ntroller. It takes all the standard and tedious HTTP request/response work from your hands, such as gathering user input, validating/converting them, putting them in model objects, invoking actions and rendering the response. This way you end up with basically a JSP or Facelets (XHTML) page for View...
When to choose checked and unchecked exceptions
...d for predictable, but unpreventable errors that are reasonable to recover from.
Unchecked Exceptions should be used for everything else.
I'll break this down for you, because most people misunderstand what this means.
Predictable but unpreventable: The caller did everything within their power t...
What is unit testing and how do you do it? [duplicate]
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Agreed. In addition they protect from regressions, if you fix tests at the same time as bugs (as you should).
– MattJ
Mar 16 '09 at 23:16
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Does functional programming replace GoF design patterns?
...nguage than the other. (See Iterator for example.)
(The above is a quote from the Introduction to the Design Patterns book, page 4, paragraph 3)
The main features of functional
programming include functions as
first-class values, currying,
immutable values, etc. It doesn't seem
obvious...
Creating an abstract class in Objective-C
...on of an abstract class, however. In fact, there is nothing to stop a user from providing implementations of abstract methods via a category (i.e. at runtime). You can force a user to at least override certain methods by raising an exception in those methods implementation in your abstract class:
[...