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Minecraft Failed To Bind Port I made a server and used my IPv4 address for the IP. I decided to scratch that server and make a Bukkit server so I can use plugins. I tried to use my IPv4 address which I used for my other server but I keep getting the message [17:31:15 WARN]: ****FAILED TO BIND TO PORT!  Is there any thing I can do to get a new address to use or is there a way to delete the old server? Do I need to use a different computer? Please help! I've don't know how to fix this problem. If you have any suggestions please tell me and I'll give it a try. align vs equation I always use align in my documents, and avoid equation. Is there anything wrong with that? My reasoning behind this: align > equation, so why not use it? Why ZSH ends a line with a highlighted percent symbol? I've noticed this on occasion with a variety of applications. I've often thought it was because the output was cancelled early (ctrl+c, for example) or something similar, and zsh is filling in a new line character. But now curiosity has gotten the best of me, since it doesn't seem to do this in bash.   zsh    bash    The Sequence program is something I pulled from a book while reading on Java certifications and just wanted to see if it would compile and run. I did notice that it does not use the println() method from the System.out package/class. Instead it uses plain old print().  Is the lack of a new line character the reason I get this symbol? Given:  DateTime.UtcNow   How do I get a string which represents the same value in an -compliant format?  Note that ISO 8601 defines a number of similar formats. The specific format I am looking for is:  yyyy-MM-ddTHH:mm:ssZ Calculating roundness/compactness of polygon? I am trying to find ways to quantitatively describe the shapes of various polygons. For my project, these polygons represent lakes, rivers, lagoons, and parks. So they can be almost any shape. One easy metric is to calculate perimeter vs. area, which is at best an only slightly useful metric. But I would also very much like to be able to say something about the 'roundness' of a polygon. Or how 'compact' the shape is on a map.  The only way I can think of doing this easily is to calculate the area of each polygon in relation to a bounding box for that polygon (which I already have). But this seems like a poor solution.  So now I am thinking of something more like this - take the centroid of the polygon, add on a series of buffers of increasing areas (say 50%, 100%, 150%), then compare how much overlap there is between each buffer and the original polygon. A perfect circle will have perfect overlap at 100%, and I can use the 50% and 150% buffers to judge how much and in what way each polygon differs.  But even that feels cumbersome, and like a poor workaround for what somebody else has probably already figured out far better.  For reference, at a minimum I will need to be able to look at the resulting indices for the shape of various polygons, and be able to make an educated guess as to their source (River? Reservoir with dendritic shape? Lake/Lagoon? Park?) Is it bad practice to return from within a try catch finally block? So I came across some code this morning that looked like this:  try {     x = SomeThingDangerous();     return x; } catch (Exception ex) {     throw new DangerousException(ex); } finally {     CleanUpDangerousStuff(); }   Now this code compiles fine and works as it should, but it just doesn't feel right to return from within a try block, especially if there's an associated finally.  My main issue is what happens if the finally throws an exception of it's own? You've got a returned variable but also an exception to deal with... so I'm interested to know what others think about returning from within a try block? Using "the" instead of "a" for something that isn't a specific object I've been curious about this for a while.  Generally, one uses "the" if they mean a specific object ("The copy of Lord of the Rings I bought yesterday") instead of any object that fits a description ("I have a copy of Lord of the Rings").  However I've seen "the" used in some cases where the phrase doesn't refer to a specific object. I've noticed it mostly being about technology, such as "This game requires the Classic Controller" (seen on some Wii Virtual Console games). While saying "This game requires a Classic Controller" seems to be correct as well, using "the" doesn't feel wrong either.  The controller's page on Wikipedia also uses "the":   What is the rule that allows the use of "the" in this context?  I presume it has something to do with "Classic Controller" being a proper noun. Are PDO prepared statements sufficient to prevent SQL injection? Give read-only access to specific folders? A fly in an accelerating car A fly is flying around in a car, the fly never touches any surface in the car only fly’s around in the air inside the car. The car accelerates. does the fly slam in to the rear window. or does the fly continue to fly uninterrupted? How exactly do I install Minecraft Mods and what is Forge? Setting environment variables on OS X What is the proper way to modify environment variables like PATH in OS&nbsp;X?  I've looked on Google a little bit and found three different files to edit:   /etc/paths ~/.profile ~/.tcshrc   I don't even have some of these files, and I'm pretty sure that .tcshrc is wrong, since OS&nbsp;X uses bash now. Where are these variables, especially PATH, defined?  I'm running  (Leopard). Is it possible to append to innerHTML without destroying descendants' event listeners? In the following example code, I attach an onclick event handler to the span containing the text "foo". The handler is an anonymous function that pops up an alert().  However, if I assign to the parent node's innerHTML, this onclick event handler gets destroyed - clicking "foo" fails to pop up the alert box.  Is this fixable?  &lt;html&gt;  &lt;head&gt;  &lt;script type="text/javascript"&gt;    function start () {     myspan = document.getElementById("myspan");     myspan.onclick = function() { alert ("hi"); };      mydiv = document.getElementById("mydiv");     mydiv.innerHTML += "bar";   }   &lt;/script&gt;  &lt;/head&gt;   &lt;body onload="start()"&gt;    &lt;div id="mydiv" style="border: solid red 2px"&gt;      &lt;span id="myspan"&gt;foo&lt;/span&gt;    &lt;/div&gt;  &lt;/body&gt;  &lt;/html&gt; How do I install drivers for the Atheros AR8161 Ethernet controller? Low Quality review queue erroneously showing "Close" instead of "Recommended Close"? I was in the Low Quality Review queue, and the following review confused me:    It's showing eight "Close votes", which should be more than enough to close a question.  I checked the question's , and it wasn't somehow closed, then re-opened in the middle of the review.  So I then checked on each of the users, and noticed that the majority of them are under 3000 reputation, meaning they can only "Recommend Close".    However, all reviews are simply showing as "Close", which is extremely confusing.  Is this a bug, or possibly an undocumented change related to ?    Another recent example: Modify a shape and have modifications apply to clones Is there any any "Symmetry Modifier" option in illustrator?   Let's say I want to create a head that is totally symmetric. I created one half then mirrored it to get another half. Flipped the other half, aligned them and joined them together with Pathfinder→Unite option.   Now I modified some portion of the right half outline. But how can I get that same modification to be updated on the left option? I thought it would happen automatically. What are the colored/highlighted edges in edit mode? SQL Server: Examples of PIVOTing String data Java generics T vs Object Why does English spelling use silent letters?