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What are the differences between ArrayList and Vector?
What are the differences between the two data structures ArrayList and Vector , and where should you use each of them?
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Is an anchor tag without the href attribute safe?
Is it okay to use an anchor tag without including the href attribute, and instead using a JavaScript click event handler? So I would omit the href completely, not even have it empty ( href="" ).
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Advantages of using display:inline-block vs float:left in CSS
...nt to have multiple DIVs in a row we would use float: left , but now I discovered the trick of display:inline-block
5 A...
Scanner vs. StringTokenizer vs. String.Split
...only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shopping for spliting?
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What is a stack trace, and how can I use it to debug my application errors?
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In simple terms, a stack trace is a list of the method calls that the application was in the middle of when an Exception was thrown.
Simple Example
With the example given in the question, we can determine exactly where the exception was thrown in the app...
is_file or file_exists in PHP
I need to check if a file is on HDD at a specified location ($path.$file_name).
5 Answers
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What is the http-header “X-XSS-Protection”?
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X-XSS-Protection is a HTTP header understood by Internet Explorer 8 (and newer versions).
This header lets domains toggle on and off the "XSS Filter" of IE8, which prevents some categories of XSS attacks.
IE8 has the filter activated by defau...
Which version of the git file will be finally used: LOCAL, BASE or REMOTE?
When there's a collison during git merge , I open a mergetool called Meld . It opens three files LOCAL, BASE and REMOTE. As I've read LOCAL is my local branch, BASE is common ancestor and REMOTE is the branch to be merged.
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Can we instantiate an abstract class?
...he method on your abstract class reference pointing to subclass object.
This behaviour is clearly listed in JLS - Section # 15.9.1: -
If the class instance creation expression ends in a class body, then
the class being instantiated is an anonymous class. Then:
If T denotes a class, t...
Why can't I define a static method in a Java interface?
...on why interfaces couldn't have had static methods in previous versions. This is summed up nicely by the poster of a duplicate question. Static interface methods were initially considered as a small language change, and then there was an official proposal to add them in Java 7, but it was later drop...