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程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...行编码和解码的一种算法。
举个例子：
假设我们要对LOVE加密，我们可以先定义字母的顺序ABCDEFGHIJKLMNOPQRSTUVWXYZ，然后我们让每个字母向后移动两位，那么LOVE就变为了NQXG
L------>N
O------>Q
V------>X
E------>
LOVE--->NQXG
我想这就...
Extract source code from .jar file
Is there a way to extract the source code from an executable .jar file (Java ME)?
10 Answers
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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
In the shell you can do redirection, > < , etc., but how about AFTER a program is started?
8 Answers
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Build and Version Numbering for Java Projects (ant, cvs, hudson)
What are current best-practices for systematic build numbering and version number management in Java projects? Specifically:
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What are the differences between JSON and JavaScript object? [duplicate]
I am new to JSON and JavaScript objects.
3 Answers
3
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How can I have grep not print out 'No such file or directory' errors?
I'm grepping through a large pile of code managed by git, and whenever I do a grep, I see piles and piles of messages of the form:
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How does a ArrayList's contains() method evaluate objects?
Say I create one object and add it to my ArrayList . If I then create another object with exactly the same constructor input, will the contains() method evaluate the two objects to be the same? Assume the constructor doesn't do anything funny with the input, and the variables stored in both objec...
Calling a function from a string in C#
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When would anyone use a union? Is it a remnant from the C-only days?
I have learned but don't really get unions. Every C or C++ text I go through introduces them (sometimes in passing), but they tend to give very few practical examples of why or where to use them. When would unions be useful in a modern (or even legacy) case? My only two guesses would be programming ...