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Sharing Test code in Maven
...jar containing test classes".
This creates jar file of code from src/test/java using the jar plugin so that modules with tests can share code.
<project>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactI...
BigDecimal - to use new or valueOf
... but it's a lot less intuitive.
There's a nice explanation of this in the JavaDoc:
The results of this constructor can be somewhat unpredictable. One might assume that writing new BigDecimal(0.1) in Java creates a BigDecimal which is exactly equal to 0.1 (an unscaled value of 1, with a scale of...
What is the result of % in Python?
...ain why -11 % 5 = 4 - dahiya_boy
This is weird, right? If you try this in JavaScript:
> -11 % 5
-1
This is because in JavaScript % is the "remainder" operator while in Python it is the "modulus" (clock math) operator.
You can get the explanation directly from GvR:
Edit - dahiya_boy
In Java a...
Should switch statements always contain a default clause?
...
This is an important observation! It applies even more in Java because it doesn't allow you to cast ints to enums.
– Lii
Sep 21 '15 at 7:42
...
How can I convert immutable.Map to mutable.Map in Scala?
...p(1 -> "one", 2 -> "two")
//iMap: scala.collection.immutable.Map[Int,java.lang.String] = Map((1,one), (2,two))
scala> val mMap = new HashMap[Int,String] {
| override def default(key: Int): String = iMap(key)
| }
//mMap: scala.collection.mutable.HashMap[Int,String] = Map()
...
The apk must be signed with the same certificates as the previous version
...nal APK and update APK were signed with by using these commands, using the Java keytool:
keytool -list -printcert -jarfile original.apk
keytool -list -printcert -jarfile update.apk
This shows you detailed information about the how an APK was signed, for example:
Owner: CN=My App, O=My Company,...
Math.random() versus Random.nextInt(int)
...s : time:328 milesecond.
usingMathsRandom : time:187 milesecond.
package javaFuction;
import java.util.Random;
public class RandomFuction
{
static int array[] = new int[9999];
static long sum = 0;
public static void usingMathsRandom() {
for (int i = 0; i < 9999; i++) {
...
Coding in Other (Spoken) Languages
...
In the Java language some methods must be named (at least partially) using the English language because of the JavaBeans convention.
This convention requires that a property X be established via a pair of getX() and setX() methods....
Can I use my existing git repo with openshift?
... wrote a jboss tools blog which was demonstrating how to use the openshift-java-client some months ago: https://community.jboss.org/wiki/Enable-openshift-ciFullExampleUsingOpenshift-java-client . You'll spot the above steps in the last paragraph "We're almost there".
...
Why would you use String.Equals over ==? [duplicate]
...'s entirely likely that a large portion of the developer base comes from a Java background where using == to compare strings is wrong and doesn't work.
In C# there's no (practical) difference (for strings) as long as they are typed as string.
If they are typed as object or T then see other answers...