Develop Reference

Is there a way of comparing two open files without using package explorer/project/navigator?

For large projects I dont want to be manually finding files on the left- navigator/project-explorer or package explorer. It takes too much time if project has hundreds of files.
How can I compare two files that are open in editor?:
I looked up other answers and could not find what I need. This post shows how to do it using navigator (not what I need). How to compare two files in Eclipse?
UPDATE:
I do not want to be finding other file manually in project/navigator/whatever. Takes too long.
UPDATE2
AnyEdit eclipse plugin suggested by ngueno helps speeding up comparison.
Even though I still need to use side-bar/explorer it speeds up the work.
At the time of writing this post this problem was recognized by Eclipse community (https://bugs.eclipse.org/bugs/show_bug.cgi?id=224562).

Yes you can do that using the Eclipse, after installing the AnyEdit plugin (can be found on Eclipse Marketplace)
The plugin will show the following option:
This will show a selection dialog to you choose which editor you want to compare:
And after the selection:
There are a few discussion around this feature in the bugs 224562 and 39126, they also mention the AnyEdit workaround. It seems they did not have anyone from the community available to work on this improvement yet.

How can I load a predefined rule set to a sonar profile

i have a local sonar server running. i would like to create a new profile with a set of rules that were predefined by someone else. i have the XML file containing all the rules.
is there a way to upload the XML file to the profile and not define the rules manually?
thanks

Make sure you are logged into Sonar.
Click on Quality Profiles in the top navigation bar, then click on "Restore Profile" on the right hand side under the search bar. Make sure you have all the applicable quality plugins that the export is using or the restore will choke.

May be a bit old thread but worth answering this question with exact steps as I struggled alot with this problem.
Though its a hacky way to import rulebook from prod to your local. But it works and can save valuable time.
Here are the steps:
Login to SonarQube as admin.
Create a new Quality Profile as below:
Download the default xml from local sonarqube by clicking on Backup button. Lets call this file local-rulebook.xml
Open both the prod-rulebook.xml file & local-rulebook.xml in notepad.
Delete the selected part from local-rulebook.xml & replace with the content from prod-rulebook.xml. Save the file.
P.S: Do not change the value of <profile><name>{yourProfileName}</name>.
Go back to sonarQube and Click Restore at top-right corner of the screen.
Import the newly updated file
Change the default profile type.
Congrats you successfully imported the prod-rulebook.xml to your local sonarqube.

Revision number with SVN [duplicate]

I'm using Visual SVN on my Windows Box.
I have Repository Application, which has Framework as an svn:external. All well and good.
When I make a checkout of Application, I'd like to have the version of Application and Framework for inclusion in a footer file. This way I could have something like:
Application Version $ApplicationVersion$, Framework Version $FrameworkVersion$
Ordinarily, I understand I could use svn:keywords and add the revision - but as I understand it, svn:keywords apply on a per-file basis. A few sites have suggested using svnversion to produce the output for each variable, but I'm not entirely sure how to go about this.
Once again, on a Windows Box, using VisualSVN. I also develop on a Mac using Versions.app if it provides a more familiar interface for people to answer :)
Edit - my application is a PHP web application. As such, there is no compiling.
Thanks!

To use svnversion, you need to integrate it into the build process. If you run it on a subversion checkout, it will output a string like 73597:73598, indicating what version your tree has (notice that different files may have different versions, plus files may have also local modifications). You put something like
CFLAGS+=-DSVNVERSION="\"`svnversion`\""
into your Makefile, and then put
#define VERSION_STRING "Application version" SVNVERSION ", Framework version" FRAMEWORK_VERSION
into the code. If you don't use Make, or cannot readily have your build process run a command whose output produces a compiler command line option, then you can also use the subwcrev utility that comes with TortoiseSVN. You use that as a pre-build step, and have it transform some file with placeholders into a copy of the file with the placeholders replaced with the actual version; then your compilation will compile and link the new file.
Edit: For the PHP case, it is not possible to have the revision written automatically into a file on checkout or update. Instead, you could run svnversion on every PHP access, putting its output into the HTML response. If that gets too expensive, you can cache the svnversion result in a file and only regenerate the file if it is older than one hour (say), leaving it up to the user to remember to delete the file after an update to make it recompute the cache right away.

Tracking files changes in Java

I have java application. Every time when I'm doing changes in JSP file I need to copy saved JSP to another place (specific project). May be you know tool that can track changes in real time in files in specific folder and after every saving - copy these files to another folder, thanks.

Eclipse, IntelliJIdea like IDEs have a feature called Local History. you can view, compare replace each saved version through that by few clicks.
In java there is a support for watching file changes. You can use this to implement your own program that listen to file changes and save the version automatically whereever you want.
http://docs.oracle.com/javase/tutorial/essential/io/notification.html

Take a look at Apache Ant or Maven. These tools take a little customization, but once configured they make deploying a new version of your application as simple as a single command. Of course there is a learning curve for both Ant and Maven, so the larger and more complex the project, the more useful and time-saving these resources become.
If you really want the "quick and dirty" option for testing purposes, simply set up a Shortcut located in your Server root folder and pointing to the .jsp file in your development workspace. Give the shortcut the same name (and relative location) as the original and the shortcut will always mirror your development copy. Note that I do not recommend this option, and am only including it for completeness.

How to avoid no main class and no class def found error using DropBox and Eclipse for Java

I use Eclipse to write Java code and use DropBox to sync my code with others' across our multiple computers. Most of the time, everything works as expected: if anyone makes a change on either end, the change is saved and when the other person refreshes the Eclipse workspace, the changes come through and can be viewed and run successfully.
Sometimes, one of several errors arises. Sometimes Eclipse says it cannot find a main class and sometimes it says it could not find the class itself. Sometimes it will not report an error but for some reason will not actually update the .class file and therefore run an old version even though the compiler displays the new source code and that saves. I've then noticed that if I manually copy the code into a new .java file elsewhere in the file system and then compile it, it works fine, but for some reason it refuses to regenerate the .class file and I have to delete it manually and replace it with the one generated in the other project--then it works. But for solving the other problems everything needs to be manually copied, deleted, and re-pasted....
[The actual errors include NoClassDefFoundError, UnsupportedClassVersionError, and some other error related to not having a main class.]
I realize that the description here is somewhat vague, but unfortunately I'm not entirely sure what's going on. I hope I'm just missing some basic fact that would help solve all these problems.
Thanks!

I'm sure you will see issues using Dropbox for sharing your source.
Eclipse does not know what Dropbox is doing whilst it's uploading and downloading updates and their activities will certainly not be synchronised. At arbitrary points in time when Eclipse tries to do builds etc. it will find unexpected activity going on, maybe even partially downloaded source files which might explain the specific errors you are seeing.
You're trying to do something more complex than sharing photos or documents. The advice I would give is to use a source control system like git or subversion for source code sharing and control. You can then make use of plugins for Eclipse that are designed to integrate these systems in an easy to use way. There's a learning curve there, but the skills will serve you well.
You can use online versions of these solutions like github and unfuddle if you want to consume sharing, backup and version control of source as a service like you do with Dropbox. They're free, too.

Subversion, Git and all version control software solve all of these problems for you.

Dropbox is not really an adapted system for sharing code. What you should do is set up a SVN, and commit only the source files. This way, you won't have these kind of errors.

Dropbox does have versioning (you can restore old versions of a file), and doesn't seem to be a horrible solution for the problem. I keep my Eclipse repository on Dropbox so it is available on any computer; but since I only use it myself, I haven't encountered your problems.
There is one case I can absolutely see you running into problems--it's if your class files are stored in the dropbox as well. This would just screw everything up. Make sure you specify a location on your local hard-drive for all build artifacts (classes, jars, ...) and that the only thing on your dropbox is the .java sources.
In fact, I suggest you don't keep your eclipse project in your dropbox, just create your eclipse project and point it to the java files in your dropbox.
If this doesn't work for you, go with what other people here said and set up a SVN repository somewhere, it's easier than you would think.
Oh, another possible problem--dates! You may want to make sure the date on your java files isn't jumping forwards and backwards (as might happen if one of your developers were in another time zone). In this case, Eclipse may prefer not to re-compile your file.
Also, instead of the copy/etc procedure you are currently going through, try forcing a project clean.
Response to request for more info:
When you start Eclipse, select/create a workspace that is NOT on your dropbox. The best place is probably off your home directory. If you have already specified a default workspace, there should be a switch workspace item in the file menu.
Create your project. select "Create project from existing source" and specify the source files in your dropbox. I think you want "create separate folders for source and class files" to keep your class files out of your dropbox. If you see anything saying "Copy files into your workspace, say "no".
This should give you a valid, working project. I hope you don't see those problems any more.
One more thing may help--and this may work on your existing project--without the above procedure...
Whenever you refresh your files (f5) to load in changes from the dropbox, select the Project/clean menu and select the project. This should delete all the class files and rebuild them.
If your classfiles are shared on the dropbox, this could still have strange consequences on other people with eclipse open, so I really do suggest rebuilding your workspace as I said above.

How to avoid no main class
Provide one. That issue has nothing to do with DropBox