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If using maven, usually you put log4j.properties under java or resources?
...our classpath in your run configuration: Run->Run Configurations...->Java Application->New select the Classpath tab, select Advanced and browse to your src/resources directory.
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JSON Array iteration in Android/Java
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If you're using the JSON.org Java implementation, which is open source, you can just make JSONArray implement the Iterable interface and add the following method to the class:
@Override
public Iterator iterator() {
return this.myArrayList.iterator()...
How do you declare an interface in C++?
...special Interface type-category in addition to abstract base classes in C#/Java is because C#/Java do not support multiple inheritance.
C++ supports multiple inheritance, and so a special type isn't needed. An abstract base class with no non-abstract (pure virtual) methods is functionally equiva...
How to check for a valid URL in Java?
What is the best way to check if a URL is valid in Java?
8 Answers
8
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Rounding a double to turn it into an int (java)
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import java.math.*;
public class TestRound11 {
public static void main(String args[]){
double d = 3.1537;
BigDecimal bd = new BigDecimal(d);
bd = bd.setScale(2,BigDecimal.ROUND_HALF_UP);
// output is 3.15
Syste...
What do 3 dots next to a parameter type mean in Java?
... that method.
See the "Arbitrary Number of Arguments" section here: http://java.sun.com/docs/books/tutorial/java/javaOO/arguments.html#varargs
In your example, you could call it as any of the following:
myMethod(); // Likely useless, but possible
myMethod("one", "two", "three");
myMethod("solo");
my...
How to convert a Binary String to a base 10 integer in Java
...ause I have to do a school project with conversions without using the ones java already has
– bucksnort2
Oct 16 '13 at 13:46
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How to return multiple values? [duplicate]
Is it possible to return two or more values from a method to main in Java? If so, how it is possible and if not how can we do?
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Why does this code using random strings print “hello world”?
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When an instance of java.util.Random is constructed with a specific seed parameter (in this case -229985452 or -147909649), it follows the random number generation algorithm beginning with that seed value.
Every Random constructed with the same...
Regexp Java for password validation
I'm creating a regexp for password validation to be used in a Java application as a configuration parameter.
15 Answers
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