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Convert a string representation of a hex dump to a byte array using Java?
...nt len = s.length();
byte[] data = new byte[len / 2];
for (int i = 0; i < len; i += 2) {
data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
+ Character.digit(s.charAt(i+1), 16));
}
return data;
}
Reasons why it is an improveme...
URL encode sees “&” (ampersand) as “&” HTML entity
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edited Aug 22 '10 at 14:10
answered Aug 22 '10 at 13:59
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Javadoc: package.html or package-info.java
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package-info.java: "This file is new in JDK 5.0, and is preferred over package.html."—javadoc - The Java API Documentation Generator
Addendum: The big difference seems to be package annotations. There's a little more in the way of rationale in 7.4 Package Declarations...
How to select Python version in PyCharm?
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edited Dec 30 '14 at 21:56
Eric Leschinski
114k4949 gold badges368368 silver badges313313 bronze badges
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XAMPP, Apache - Error: Apache shutdown unexpectedly
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50 Answers
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Cross cutting concern example
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240
Before understanding the Crosscutting Concern, we have to understand the Concern.
A Concern ...
How to hide output of subprocess in Python 2.7
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440
Redirect the output to DEVNULL:
import os
import subprocess
FNULL = open(os.devnull, 'w')
retc...
SSL handshake alert: unrecognized_name error since upgrade to Java 1.7.0
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306
Java 7 introduced SNI support which is enabled by default. I have found out that certain miscon...
Why are C# 4 optional parameters defined on interface not enforced on implementing class?
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UPDATE: This question was the subject of my blog on May 12th 2011. Thanks for the great question!
Suppose you have an interface as you describe, and a hundred classes that implement it. Then you decide to make one of the parameters of one of the interface's methods optional. Are you su...
How to detect the swipe left or Right in Android?
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110
Simplest left to right swipe detector:
In your activity class add following attributes:
privat...