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Create a custom event in Java

...else in the package interface ThrowListener { public void Catch(); } /*_____________________________________________________________*/class Thrower { //list of catchers & corresponding function to add/remove them in the list List<ThrowListener> listeners = new ArrayList<ThrowLis...
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Which is more efficient, a for-each loop, or an iterator?

... If you are just wandering over the collection to read all of the values, then there is no difference between using an iterator or the new for loop syntax, as the new syntax just uses the iterator underwater. If however, you mean by loop the old "c-style" loop: for(int i=0; i&l...
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ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides

... Scott Dorman is correct. Calling the built-in Add method will trigger something like 3 events per add (a NotifyPropertyChange for item count, NotifyPropertyChange for item indexing[] and an NotifyCollectionChanged event for the item added). To get the...
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How can I fix the Microsoft Visual Studio error: “package did not load correctly”?

I installed Visual Studio 2012 and DevExpress 13.1. As Visual Studio started, it generated an error shown by this attached image, ...
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How to identify if the DLL is Debug or Release build (in .NET) [duplicate]

...s to check the compiled assemblies itself. There is this very useful tool called '.NET Assembly Information' found here by Rotem Bloom. After you install this, it associates itself with .dll files to open with itself. After installing you can just double-click on the Assembly to open and it will giv...
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Why am I getting a “401 Unauthorized” error in Maven?

...publish. The SNAPSHOTS repository (as opposed to the releases repository) allows you to overwrite a similarly numbered version, but your version number should have "-SNAPSHOT" at the end of it. share | ...
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CSV API for Java [closed]

Can anyone recommend a simple API that will allow me to use read a CSV input file, do some simple transformations, and then write it. ...
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Setting element of array from Twig

... This is so silly. Why doesn't twig allow the ability to set array values? – Matt Cavanagh Aug 2 '16 at 8:48 1 ...
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How to use a custom comparison function in Python 3?

...e a workaround, but I think I am going to lose some performance by passing all the comparison operators < > = to middle man, since my original custom sort is written in C , it had around 1/2x speed of default sort. – YOU Mar 28 '10 at 5:26 ...
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How to test code dependent on environment variables using JUnit?

... value); } } For Java 5 to 7 the library System Rules has a JUnit rule called EnvironmentVariables. import org.junit.contrib.java.lang.system.EnvironmentVariables; public class EnvironmentVariablesTest { @Rule public final EnvironmentVariables environmentVariables = new EnvironmentVariab...