I've got a small homework project, and for whatever reason Eclipse has decided to stop highlighting syntax or allowing intellisense or goto definitions or anything in this Main.java file. I've tried rebooting it, and the computer, but had no luck.
The thing that really has me confused is that it's still compiling and running the code correctly (eg, changes I make in Main.java are compiled and run - it's not running old Main.class files), so it's still in the build path ... right?
Any ideas?
Right click on the file in the Package Explorer and choose the Open With menu. You will probably find that Text Editor is selected, choose Java Editor to open the file with the correct editor.
The Open With menu selection is remembered so you should get the Java Editor in future, but equally if you choose the plain text editor that is also remembered.
I suggest finding a way to reset any setting you might have set by accident. Not saying that you did it. But just to make sure, just try it out. If you customized the preferences already, you could make some kind of note of the settings, then change it. If that doesn't work, let me know. Good Luck!
Copy the text somewhere, delete the file, and then add a new class (of the same name) and paste the text back.
Related
I've seem to have lost the ability in my Eclipse to auto-correct errors in my source code lines.
For example, a line like this:
Date date = new Date();
has red jagged lines beneath the Date() part. Previously I could mouse hover over it see a popup menu of options to fix it. Now I all I ever get is a popup with the text "Cannot resolve to a type".
The only change I can think of that I've made and I don't know if it has anything to do with this problem, is that I started editing my .java files with an outside editor. Then focusing back into Eclipse I get a popup saying the source has changed and do I want to update so I say OK.
Sometimes I will edit inside Eclipse and sometimes i will edit the source outside of Eclipse. I'm not sure if this is a bad practice or not?
Its your wish to edit Java files outside or inside eclipse. But Java editor has many features which are very helpful to developers. I suggest to edit Java files inside eclipse only.If you find other editors are good or you used to it then no problem you can edit Java files out side eclipse also. The problem you mentioned in not related to it. But make sure that changes are applied before building project in eclipse.
Solution
This occurs whenever there are multiple classes are available with the same name in you build path then eclipse don't know which one to import by default. So keep the caret on the error line and press Ctrl+1. Then a eclipse gives options to user to import one among these. See the picture below. Choose the right one then error will disappear.
I am new to Sublime Text as well as web developing. I was looking for something that can save the file when any changes are made to it. I came across to
this. It seems promising. But the problem is I don't know how to install this and use this. I also found this. But it didn't helped. So can someone tell me how to
Create this plugin
Install this plugin
Use this plugin
Step by step help would be really nice if possible.
Or If someone can point me to another editor with this functionality I am looking for.
If you're sure you really want to do this, here's how:
Select File -> New File, then View -> Syntax -> Python.
Paste the following:
import sublime, sublime_plugin
class SaveOnModifiedListener(sublime_plugin.EventListener):
def on_modified(self, view):
view.run_command("save")
Select File -> Save As... and save as Packages/User/save_on_modified.py. The Packages directory is either in %APPDATA%/Roaming/Sublime Text 2 on Windows, ~/Library/Application Support/Sublime Text 2 on OSX, or ~/.config/sublime-text-2 on Linux. You can find this directory by selecting Preferences -> Browse Packages.... On OSX the Preferences menu is a sub-menu of Sublime Text 2, on other OSes it's its own menu next to all the others. When you select Save As... you may already be in the User directory (I was on my machine).
Restart Sublime, just for fun. If you're on OSX, make sure you quit by using ⌘Q, not just closing the window by clicking on the red button.
You now should be good to go. This will now save every file, of any type, after every single modification. Again, make sure you really want to do this.
If at some point you decide you don't want to do this anymore, just delete save_on_modified.py or move it to a directory outside of the Packages hierarchy.
Good luck!
I've just started playing with macros in IntelliJ. I recorded several then played back until I decided to add keymap shortcuts to my macros. I went to Settings and pressed Alt+C to add a new child map because I couldn't edit the parent. Since then the macros are no longer accessible from the Tools menu, not to mention that the shortcuts don't work. I tried removing the shortcuts from the keymap but even though I press Alt+R or Alt+L, it still does not revert them back. And TAB has stopped working .. when writing sout +TAB ..nothing happens anymore... HELP
Sorted! sout+TAB is part of live templates..
If you open the IDE Settings window, you will see Live Templates.. Under output you should find sout(Prints a string to System.out).. if not, click Add and then type sout for the Abbreviation section, type in a description and then for the template text put System.out.println("$END$");
I use the Default keymap in IntelliJ now...
Thought this might help someone...
You can try to use the default keymap. When you modify the default keymap, a copy is created with your settings.
If that is not working, you can try to quit IntelliJ and to delete this file:
/.IntelliJIdea90/config/options/macros.xml
and check also for the folder
/.IntelliJIdea90/config/keymaps
To find the location of the config folder you should look for the file : idea.properties in the folder where the main executable for idea is.
Look for the line:
# path to IDEA config folder. Make sure you're using forward slashes
idea.config.path=${idea.home}/.IntelliJIdea90/config
And this is the location of the config. folder.
Restart IntelliJ.
Take a copy of any file you are going to delete!
In Eclipse, if I change a file programmatically, and it is open in a text editor, it doesn't always reload, not even when refreshing the resource programmatically. How can I forcibly reload the text editor from code so that it show the changed file contents?
In your project explorer or navigator, you can right-click on the file that's currently open and select refresh. This has always worked for me, even when editing files with several programs. Make sure to click the file itself, not parent objects like packages or folders or projects.
Edit
Refreshing programmatically? I would look into an Eclipse scripting tool:
http://eclipse-shell.sourceforge.net/
I guess there was another one called Monkey, but it doesn't appear to be maintained.
I don't know of any possibility to programmatically reload the file.
Some editors (e.g. GMF editors) look for changes in the underlying files, and refresh themselves, but this is not required at all.
I don't think that a forced reload is an option implemented globally, as in some cases there could be some merging steps involved that can be quite erroneous.
My ideas to solve this:
Have a specific editor that refreshes its content when the used resource changes (this can be timeconsuming);
Or close the editors of the file and reopen them (this is ugly in the eye of the user).
Since the Luna release of eclipse there's no need to reload files with F5/manual Refresh.
Really nice, especially as there was a bug with the F5 key binding.
In NetBeans the GUI Builder generates code that is off limits to you from the editor.
I know you can switch to Design Mode and specify custom code and then enter edit in indirectly that way, but it's a pain to not be able to edit text that's 2 lines from your cursor.
Can I allow editing within those regions... I promise I'll be careful :)
Thanks.
Note: I don't want to lose code generation
If you open it in an external editor, there are two possibilities:
there is no guarantee that the changes you make will work (and not break anything) in the Netbeans UI Editor
The next time you edit the file in Netbeans it will be regenerated.
Either way, probably not what you want. The best thing to do would probably be to make the whole design up in the gui editor and when you are happy with it, delete the comments and continue on.
[sarcasm]
With the drag and drop gui editor, what could you possibly want to change by hand anyway?
[/sarcasm] ;)
If you open the .java files in Notepad or WordPad, you'll find pairs of comments that say
// GEN-BEGIN: <name of section>
...
// GEN-END: <name of section>
Delete those comments, and two things will happen.
You'll be able to edit anywhere in the file in NetBeans.
NetBeans will not be able to regenerate the file from the GUI editor.
So it can be done, but don't do it unless you really mean it.
EDIT: "Note: I don't want to lose code generation." Ok, let's see here.
You want to change what is generated.
You don't want to lose code generation.
You don't want to use the facilities NetBeans provides for adding custom code.
It sounds like you're wishing yourself trouble. :D
I had a same problem. I extended JPanel with my own panel class and I was not able to pack it with the rest of UI. First I searched the web and I found your question. I was not able to find elegant solution to this problem.
Therefore, I decided to create another java class and copy NetBeans created code into it. It worked like a charm.
I agree, it would be nice if we can modify existing code like in .NET.
I copy the initcomponents() method, create my own method newInitComponents() paste the generated code, and override what needs to be overridden before i distribute the code. That way when a change is made in the editor, you can still copy paste the code into your new method. You keep the functionality without costing you the ability to override where necessary. Just call newInitComponents() in your constructor rather than the original. This is not the most efficient way of doing things, but it does what you want.
You can also try moving the .form file in
(project name)\src\(name of JFrame/JPanel).form
NetBeans will now see it as a .java file.
If you did not edit anything necessary for the GUI editor, you can move the .form file back into the src folder.
Can you subclass the class and redefine the method where this code is? Of course then you'll have to maintain the method over time as you make changes to the GUI.
You can maybe also look into AspectJ. It will modify the byte-code at build time and make the changes you define. Not sure if this gives you enough control over what code to change.
If you use APT you can rewrite source code at compile time. This way you can overwrite the code that's there at the moment. You could keep the new code in the same Java file along with comments to explain what is going on. This tutorial makes it pretty easy to get started. Copy that code, get it working, then tweak it to your liking. To find out where in the code the annotated method is call getPosition() on the Declaration.
Go to design page and select any one of the fields. Right click on any selected field and choose Customizer Code , In Customizer Code change all default code to custom creation . Now you can edit your design code as you like...
Very simple... the crappy UTF-8 did not let me compile one JasperReport (everything done by GUI). So, I needed to change Project to iso-8859-1. Result? The project is messed up and some of the things to correct are in the blocked parts of the code. So, I really NEED to edit those automatically generated parts. When they are regenerated, they will be fine because the project is now iso-8859-1.
Step # 1 Close the project in NetBeans
Step # 2 Delete the .form file from the source directory of your project
Reopen the project and it will be editable now!