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Checking if a string is empty or null in Java [duplicate]
...ge Apache Commons StringUtils.isEmpty(str), which checks for empty strings and handles null gracefully.
Example:
System.out.println(StringUtils.isEmpty("")); // true
System.out.println(StringUtils.isEmpty(null)); // true
Google Guava also provides a similar, probably easier-to-read method: Stri...
Is there a simple way to remove multiple spaces in a string?
...
This solution only handles single space characters. It wouldn't replace a tab or other whitespace characters handled by \s like in nsr81's solution.
– Taylor Leese
Oct 9 '09 at 22:21
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What is the “reactor” in Maven?
I've been reading about Maven reactor and am confused by its terminology usage. I've read that a multi-module is a reactor, that you can manipulate the maven reactor and that the reactor is a plugin. What exactly is the reactor?
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How to configure Eclipse build path to use Maven dependencies?
...hat Maven provides for managing dependencies in a project. My brief understanding of how Maven works is that it will aquire the JARs needed and then build the project with these libraries.
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MVVM: Tutorial from start to finish?
...e with no WPF experience up-to-speed enough so that (s)he can fully understand how the series’ demo application works.
Bea Stollnitz (link is to her archives) has a number of great articles on WPF.
WPF: A Beginner's Guide - Part 1 of n by Sacha Barber
WindowsClient.net WPF Training Videos
MVVM ...
What's the optimum way of storing an NSDate in NSUserDefaults?
...t primitive)? Just [sharedDefaults setObject:theDate forKey:@"theDateKey"] and be done with it. NSDate is one of the "main types" supported by the PLIST format (dates, numbers, strings, data, dictionaries, and arrays), so you can just store it directly.
See the documentation for proof.
Just store ...
How to access parent scope from within a custom directive *with own scope* in AngularJS?
...I could do it right now by taking the $scope from the preLink parameters and iterating over it's $sibling scopes to find the conceptual "parent".
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How to use JUnit to test asynchronous processes
...bmitted properly. You can mock the object that accepts your async requests and make sure that the submitted job has correct properties, etc.
Test that your async callbacks are doing the right things. Here you can mock out the originally submitted job and assume it's initialized properly and verify t...
Normalization in DOM parsing with java - how does it work?
...ucture (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates Text nodes, i.e., there are neither adjacent Text nodes nor empty Text nodes.
This basically means that the following XML element
<foo>hello
wor
ld</foo>
could be represented...
It has a DefiningQuery but no InsertFunction element… err
This thing is driving me crazy, and the error is quite meaningless to me:
6 Answers
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