... had this error many times and it can be quite hard to track down... Basically, what hibernate is saying is that you have two objects which have the same identifier (same primary key) but they are not the same object. I would suggest you break down your code, i.e. comment out bits until the error ...

... file using JavaScript. I don't want to print it on console. I want to Actually Write data to abc.txt . I read many answered question but every where they are printing on console. at some place they have given code but its not working. So please can any one help me How to actually write data to Fil...

How can I connect to a remote SQL server using Mac OS X? I don't really need a GUI, but it would be nice to have for the color coding and resultset grid. I'd rather not have to use a VM. ...

... copy NUL EmptyFile.txt DOS has a few special files (devices, actually) that exist in every directory, NUL being the equivalent of UNIX's /dev/null: it's a magic file that's always empty and throws away anything you write to it. Here's a list of some others; CON is occasionally useful as w...

...d Screen-size so while developing an Application which support multiple (small and big) screen there is an obstacle of size and layout. ...

...rs. It means you have to put their Gmail into the testers list. This is usually for employees. 2. Alpha testing - Same as internal testing, but this time you can send your app to your friends, families, or on your smartphones. 3. Beta testing - This is a serious matter, this is public testing. But p...

... libraries out there. HTML5 validation is easy, quick to set up. And above all it is good to follow standards. But that does not mean that it is "the best" solution. Never say never. It always depends. Although I do agree that you should "never" skip client validation completely. ;-) ...

...e image to every list item that follows another list item - in other words all of them but the first. NB. Be aware the adjacent selector (li + li) doesn't work in IE6, so you will have to just add the background image to the conventional li (with a conditional stylesheet) and perhaps apply a negati...

... I know I'm late to the party, but here's a more solid answer. All you need to do is use min-height: 100%; rather than height: 100%; and your gradient background will extend the entire height of the viewport without repeating, even if the content is scrollable. Like this: html { mi...

... Generally speaking: F5 may give you the same page even if the content is changed, because it may load the page from cache. But Ctrl-F5 forces a cache refresh, and will guarantee that if the content is changed, you will get the ne...