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XML Document to String
... distributing via Maven (thus groovy too), including no reliable source or JavaDocs, WTF! No official maven support makes deprecation resolution harder, makes consistent updates more hassle, and poses security risks, so it is stupid to have any dependencies on it now!
– Inferno...
recursion versus iteration
...d the n th triangular number:
Using an iterative algorithm:
//Triangular.java
import java.util.*;
class Triangular {
public static int iterativeTriangular(int n) {
int sum = 0;
for (int i = 1; i <= n; i ++)
sum += i;
return sum;
}
public static void main(Stri...
String.replaceAll without RegEx
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Eclipse jump to closing brace
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For me this only works with JAVA. When I edit javascript code inside an JSP file, it doesn't work.
– John Henckel
Feb 22 '16 at 16:46
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Clearing coverage highlighting in Eclipse
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For Clover you can hide the colors in the java editor by going to "Clover | Coverage Explorer" -> Coverage in Editors > Show None. Hides all red/green coverage areas in open Java editors.
– Vineet Bhatia
Dec 5 '14 at 14:21...
When should null values of Boolean be used?
Java boolean allows values of true and false while Boolean allows true , false , and null . I have started to convert my boolean s to Boolean s. This can cause crashes in tests such as
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How to write log base(2) in c/c++
... There is also a nice bit-twiddling method for this (taken from Java's Integer.highestOneBit(int) method): i |= (i >> 1); i |= (i >> 2); i |= (i >> 4); i |= (i >> 8); i |= (i >> 16); return i - (i >>> 1);
– Joey
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How do you match only valid roman numerals with a regular expression?
...input.matches(regx)) -> this evalulates to false for MMMCM / MMMM in java.
– amIT
Aug 10 '14 at 14:07
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Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags
...DISTINCT has two meanings in JPQL, and here, we need it to deduplicate the Java object references returned by getResultList on the Java side, not the SQL side. Check out this article for more details.
As long as you fetch at most one collection using JOIN FETCH, you will be fine.
By using multipl...
What is the purpose of the reader monad?
...onad is so complex and seems to be useless. In an imperative language like Java or C++, there is no equivalent concept for the reader monad, if I am not mistaken.
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