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What is the equivalent of “!=” in Excel VBA?
...ngth in the beginning and the content itself right after that. C-based and Java languages, on the other hand, do not store the length and have the '\0' (null) terminator to signal that the string ended. Because of that, getting the length in VBA is fast -- it's just reading an integer from memory --...
How to check if element exists using a lambda expression?
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How can I resize an image using Java?
I need to resize PNG, JPEG and GIF files. How can I do this using Java?
17 Answers
17
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How to import an existing X.509 certificate and private key in Java keystore to use in SSL?
... According to CoverosGene's answer keytool supports it since Java 6. This is the link he provided
– Houtman
Dec 8 '14 at 11:58
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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 ...
How to list the files inside a JAR file?
...s entry. */
...
}
}
}
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...
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
...
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...
How to convert Strings to and from UTF8 byte arrays in Java
In Java, I have a String and I want to encode it as a byte array (in UTF8, or some other encoding). Alternately, I have a byte array (in some known encoding) and I want to convert it into a Java String. How do I do these conversions?
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