for a mistake i've made eclipse v. 3.4.2 formatting my sourcecode on a single class file.
That's really confusing, how can i restore my own original text format?
The simplest approach is probably to use Eclipse's Local History. On the context menu for the file, select "Restore from local history." If it's not in the local history, you may need to go back to the previous version in source control... (I assume you're using source control. If you're not, I strongly urge you to do so, right away.)
Of course, another option if you've still got the file open is just to press Ctrl-Z to undo actions - keep doing that until the formatting goes away :)
Related
So I made a package, lets call it dev.example.project for example purposes. all my other packages extended off of that one, with names like dev.example.project.handler or dev.example.project.assets. But I decided to go back and change the dev.example.project package's name to something else, like dev.betterexample.project.
I thought it would be a simple matter of renaming all the other packages and import statements so no errors would happen, but right after i changed the name, all the packages in my project turned white and became inaccessible. I changed the name back to what it originally was, but when i opened Eclipse again, some packages and files were simply not there.
I spent a lot of time on this project, someone help?
Depending how exactly you did that renaming, various things could have gone wrong.
Remember: you can always go in and work outside of eclipse. Close it, open a file explorer and create directories that use the names you want to use. Then move files manually to their target directories. If you want to, open them in another text editor and fix the package lines. When you now open eclipse, do a refresh and full rebuild. Things should be fine then.
That is probably not the most elegant solution, but it always works. And more importantly, you are in full control of everything that happens!
And for the record: the real answer to avoid catastrophic loss of code is to use a source code management system such as git. And to then push your changes constantly out to that "backup" facility.
I've come across quite an odd problem with eclipse.
I was working on a project and I right clicked on a method call declared in another class and used Eclipse's handy find declaration in project (saves me quite a bit of scrolling) to run a search for that specific method declaration. Right as it should my search pane pops up with a link to the method declaration. So I click the link, the other file the method is declared in is opened automatically, and poof the Java file I had searched from disappears from my editor tabs.
So I say to myself, "damn this old version of eclipse (Indigo) has some bugs...now I've got to go reopen my file and get back to my spot...GREAT!". But when I open the file, it is treated like a plain text file. All the text is the same color, and the outline won't work!!!
So I solved the problem whilst I was typing the above up and decided to post the answer since it isn't a nice clean solution..and I doubt one exists.
Okay so file wasn't being recognized by eclipse..
So I open the file and do a Save As, and save it under another name in the same package.
Then, I went to my test code and right clicked on a method call that was declared in the file that eclipse had buggered up, and went to search for declaration in project.
Sure enough two results popped up, one in the newly saved as file, and one in the old one.
I clicked on the old one, and still plain text...no difference.
But then I clicked on the new one, and my highlighting was back!
So then I just deleted the old file and refactored.
I think somehow eclipse made the file disappear without properly closing it...just my guess, glad I resolved this nice and quickly, hopefully anyone who has the same issue can be helped by this.
This happened to me a couple of minutes ago. Trying to close/open the projet, restarting eclipse did not work for me.
The steps I used were:
Pick another Java file (same package) right next to the bogus one (make sure syntax highlighting works on this one)
Choose 'Save As' and override the bogus one.
Verify that the bogus one now has proper syntax highlighting
Use git checkout -- to retrieve you original file
Et voilà !
I have been wracking my brain trying to figure this out. For the first time I used jEdit the other day and I was pleasantly surprised that it auto indented my code (meaning that I'd put in the following code:
int method () {
_ //<-- and it put me here automatically
I've tried to get the same thing working with eclipse but with no success. I got into the code formatter but I don't see how to make that happen.
Is it possible to do this? Also while I'm here, is there a such thing as a eclipse plugin that will allow you to search the methods and classes of the standard java library?
Thanks
Personally all I use for this is the format options Window->preferences under Java->Code Style ->Formatter.
I once took the time to tweek how I like my code to look like when I work and exported the whole thing. After that I just code without too much bother on what it looks like. When I find the code looks messy by pressing the combination ctrl+shift+f and the whole class becomes pretty again, comments and all.
After a while it pretty much became a reflex...
code code code
ctrl-s, ctrl-b (cause I disable auto build sometimes), ctrl-shift-f
code some more etc...
Once I got used to this I never really cared how it presented the code as i was typing because I knew it would look all pretty as soon as the loop/if/switch/method etc is finished
My clean eclipse install does this by default.
Have you changed any options? Make sure the file you are editing has the .java file extension. The preference options that control the typing automations are under Java -> Editor -> Typing in the Window -> Preferences menu.
Also, I find that the auto-indenting, and most of the other auto-complete functions of eclipse do not function well if the file I am editing has errors in it which prevent compilation. Make sure that your curly-braces are matched correctly, this is the main one that I've noticed blocks auto-indent.
Regarding searching through the standard Java libraries, use the Search -> Java.. menu option, and check the JRE libraries checkbox, then search away. You can also use the Hierarchy view to see how the classes relate. Also, in the Package and Project views you can expand the JRE System Library, and then expand rt.jar which holds pretty much all the standard Java pacakges.
Eclipse has always done this for me by default.
One really cool thing about eclipse is that you can search preference pages. Just right click and go to prefrences. Go to the "Window" menu, and click "Prefrences". Then at the top of the tree view there's a text box that says "type filter text". Replace that with "indent" and it should bring up the page where the indent option is.
Make sure that eclipse recognizes your file as a java file, that you're using the Java distribution, the latest version, etc.
Iv been trying to work around the eclipse indenting and other supposed features for years, and it seems that the bottom line is this ...
It only works for the programming style of the authors, so to use it you need to modify your style to comply.
This would be OK except that the authors of eclipse have some very strange ideas about common shortcut keys.
One horrid example is the search features, eg when did Ctrl+K become "Find Next occurrence" and why doesnt F3 or n work?
That all being said I use eclipse because if you have the time to wait around while it starts up - or never close it - and you can modify everything youve learned about using an editor - why why why - then it will certainly increase your efficiency.
Please note that there is a preference setting for indenting, it can be set for a project, a workspace, or globally, but no matter how you set it eclipse will still chuck tab characters in where you dont want them.
In fact its indent crazy, like it wants to indent everything, even if its already indented.
Like I said Iv been using it for years and it STILL drives me nuts with its random behavior.
Follow these steps for Eclipse:
Select all text: ctrl+A
Correct indentation: ctrl+I
You should check:
Hidden features/tricks for Eclipse?
What is your favorite hot-key in Eclipse?
I just started using eclipse for some personal projects and am finding the transition from IntelliJ (what I use at work) kind of annoying. I hope it's kosher to ask a few different questions in the same thread. Here goes:
1) How do I get "views" (I'm not sure if this is the term. I mean windows such as Project Explorer, Servers, Console, etc) to stay expanded and on top even after I've clicked back on the editor or another view. I'm pretty sure that right now all of these tabs are "quick views" that I have minimized and then docked, so I may not be doing this right to begin with. In IntelliJ, I would simply just pin the tab.
2) How can I open a file (for instance, an ant build.xml) without having to make it part of an eclipse project? I want the syntax highlighting and Ctrl-click ability that the IDE will give me (not to mention being able to use eclipse's built-in ant), but I don't need to associate the file with any others and so don't see the point of having to make it a part of a project.
3) Is it just me (wouldn't be surprised) or does eclipse have a bug with parsing empty html tags within the body of html tags of the same type. I've only tested this in a JSP, and it doesn't happen with JSF tags. For example: <div id="foo"><div id="bar"/></div>. Eclipse will give a warning saying the first div tag has no end tag. This is with the most recent version of eclipse for Java EE, no plugins have been installed.
4) Finally, a general question: Any best practices or resources to look at for organizing the eclipse interface and perspectives/views? What about workspaces/projects? Is there some tutorial out there that would be really informative that I could read through in less than an hour?
I appreciate any answers and tips/tricks.
First of all, please acknowledge that there are different people in the world and there are people who don't work the "Eclipse way". Even if I was paid for it (and I am), I couldn't work with IDEA. So if Eclipse rubs you the wrong way, it may not be for you. That out of the way, your answers:
In Eclipse, you open a view and let it stay where it is. In IDEA, the view changes all the time, things pop up and go away. Eclipse is static unless you specifically move things around. There are two ways to move things: You can minimize a part (a part is something which contains tabbed views). This moves the part into the closest border. Or you can maximize the current part (Ctrl-M). This pushes all other parts out of the way. Another Ctrl-M will restore the view.
This is a good place to show the difference between IDEA and Eclipse. IDEA tries to anticipate what you're doing and to be helpful. For me, this means it always gets in my way. It will start to format source as I type, things move, etc. That freaks me out. Eclipse is like a toolbox. Everything is there but you have to pick it up. A toolbox doesn't move on its own accord and it doesn't try to be smart.
Eclipse is based on the idea of a workspace. The workspace is the universe and nothing outside exists. If you need to go outside, you must first create a file or folder. In the "New File/Folder" wizard, you can open the advanced options (at the bottom) and link this resource to a real file/folder in the file system. May sound like a lot of effort but it allows Eclipse to display virtually anything in the explorer since it just shows "resources" in there, not actually files.
Smells like a bug. Please report it at https://bugs.eclipse.org/bugs/
I'm not aware of anything.
[EDIT] 3. As cletus pointed out, is not valid HTML. So that might cause the warning.
An Eclipse Perspective is a collection Views and their position. You can customize or create new perspectives, but the existing ones are good enough for a start (Java, J2EE, Java Browsing etc.). I recommend to stick with the default layout for a while until you've managed to use the quick view feature (which, personally, i find quite annoying). On small screens, i simply like to use Ctrl-M to switch the Editor to fullscreen mode and back, without the need of minimizing single views or move them around.
Yes, you can run external build scripts as well and it's called External Tool in Eclipse. Go to Run > External Tools > External Tools Configurations. Create either a new Ant-based config or a native executable (Program). The location of the build script or executable can either be workspace-relative (Browse Workspace) or absolute on the file system (Browse File System)
Is there a quick way to make Eclipse put curly brace on the next line (by itself) on a block of code?
Yes, edit your active profile (Java...Code Style...Formatter), and change the brace positions to the next line. Also, in Java..Editor..Typing, you can have it automatically insert your braces at the correct position.
For pre-written block of code, first do the settings as suggested by Don and then select that piece of code and right click Source Code->Format and the formatting would take place as per the settings done in the preferences.
Current versions of eclipse have a more convenient way of doing this.
Go to Preferences->Java->Code Style->Formatter
Click on edit, and on the new opened window, go to the Braces tab. Here you can choose how different types of blocks of code organize their curly braces.
Hope this helps any who google this, and find this post. (Like myself)
Regards to all!
The simplest and global way:
Go to Window -> Preferences.
Then in search put: "brace".
Select -> Java -> Code Style-> Formatter
After opening new window go to brace tab and change it as you prefer.
Coming from C# background I couldn't come to grips with built in Java formatting of Eclipse.
With some effort I managed to get most of what Visual Studio used to offer me. Here is an XML version of it. You can import the file..
Preferences->Java->Code Style->Formatter->Import->Apply
Additionally see arguments on which approach is better on our sister site..
In addition to the methods of changing the settings and ctrl-shift-f to apply, these settings can be done on a per project basis. Simply right-click on your project, choose properties, Java Code Style, and enable the checkbox for "enable project specific settings."
I find this invaluable for use between projects I work on to configure it to match a particular client style, along with other settings to try to match code formatting of existing code. This way, you won't upset other people but can still use your own style on other code bases. :)