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How can I iterate through the unicode codepoints of a Java String?
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Yes, Java uses a UTF-16-esque encoding for internal representations of Strings, and, yes, it encodes characters outside the Basic Multilingual Plane (BMP) using the surrogacy scheme.
If you know you'll be dealing with characters ...
In Java, is there a way to write a string literal without having to escape quotes?
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The answer is no, and the proof resides in the Java Language Specification:
StringLiteral:
"StringCharacters"
StringCharacters:
StringCharacter
| StringCharacters StringCharacter
StringCharacter:
InputCharacter but not " or \
| EscapeSequence
As ...
PHP Regex to check date is in YYYY-MM-DD format
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198
Try this.
$date="2012-09-12";
if (preg_match("/^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3...
How to list the files inside a JAR file?
...s entry. */
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}
}
}
else {
/* Fail... */
}
Note that in Java 7, you can create a FileSystem from the JAR (zip) file, and then use NIO's directory walking and filtering mechanisms to search through it. This would make it easier to write code that handles JARs and "exploded" directo...
Properties file in python (similar to Java Properties)
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pyjavaproperties seems to be an option if you don't want to use Jython: bitbucket.org/jnoller/pyjavaproperties
– Hans-Christoph Steiner
Nov 16 '11 at 19:46
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Weird “[]” after Java method signature
I looked at some Java code today, and I found some weird syntax:
4 Answers
4
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What does value & 0xff do in Java?
I have the following Java code:
4 Answers
4
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Cross field validation with Hibernate Validator (JSR 303)
...package constraints;
import constraints.impl.FieldMatchValidator;
import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.Documented;
import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.ElementType.TYPE;
import...
How do I efficiently iterate over each entry in a Java Map?
If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map?
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Loop through all the files with a specific extension
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No fancy tricks needed:
for i in *.java; do
[ -f "$i" ] || break
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done
The guard ensures that if there are no matching files, the loop will exit without trying to process a non-existent file name *.java. In bash (or shells supporting something sim...