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Why not abstract fields?
... do what you described by having a final field in your abstract class that is initialised in its constructor (untested code):
abstract class Base {
final String errMsg;
Base(String msg) {
errMsg = msg;
}
abstract String doSomething();
}
class Sub extends Base {
Sub(...
How to reference style attributes from a drawable?
...for my application. In order to do that, I defined some attributes, like this:
5 Answers
...
Laravel Eloquent: Ordering results of all()
I'm stuck on a simple task.
I just need to order results coming from this call
9 Answers
...
What is WEB-INF used for in a Java EE web application?
...
The Servlet 2.4 specification says this about WEB-INF (page 70):
A special directory exists within the application hierarchy named
WEB-INF. This directory contains all things related to the
application that aren’t in the document root of the applicatio...
How to position one element relative to another with jQuery?
...
NOTE: This requires jQuery UI (not just jQuery).
You can now use:
$("#my_div").position({
my: "left top",
at: "left bottom",
of: this, // or $("#otherdiv")
collision: "fit"
});
For fast positi...
How do I set cell value to Date and apply default Excel date format?
I've been using Apache POI for some time to read existing Excel 2003 files programmatically. Now I have a new requirement to create entire .xls files in-memory (still using Apache POI) and then write them to a file at the end. The only problem standing in my way is the handling of cells with dates.
...
Displaying build times in Visual Studio?
Our build server is taking too long to build one of our C++ projects. It uses Visual Studio 2008. Is there any way to get devenv.com to log the time taken to build each project in the solution, so that I know where to focus my efforts?
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Function Pointers in Java
This may be something common and trivial, but I seem to be having trouble finding a concrete answer. In C# there is a concept of delegates, which relates strongly to the idea of function pointers from C++. Is there a similar functionality in Java? Given that pointers are somewhat absent, what is the...
Easiest way to convert a List to a Set in Java
What is the easiest way to convert a List to a Set in Java?
16 Answers
16
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How to diff one file to an arbitrary version in Git?
...pom.xml
... to compare your current pom.xml to the one from master 20 revisions ago through the first parent. You can replace master~20, of course, with the object name (SHA1sum) of a commit or any of the many other ways of specifying a revision.
Note that this is actually comparing the old pom....