How can I remove this expression? - eclipse

I recently used this tool so I am bigger.
when I wrote codes, suddenly this expression appeared.
How can I remove this expression?
thank you.

It notice you that is a tab space:
You can change the configuration like this :
Window -> Preferences -> General -> Text Editor.
Then uncheck Show white spaces character

Related

How to add quotation marks around selected text in Eclipse

Countless times i have needed to put a quotation marks around text during programming. I remember awhile ago that i have seen someone selecting text and simply do magic with the keyboard shortcuts and putting quotation marks around it. How to do so?
In eclipse
1. Window -> Preferences -> Java -> Editor -> Templates
2. Click on "New"
3. Type "quote" for name (you can name it whatever you want)
4. In the pattern box, enter "${word_selection}"${cursor}
5. Click ok
6. Click apply and close preferences
7. Select the string you want quoted, press CTRL + <space> and type quote

Where to change highlight color for selected occurrences in Eclipse?

When a method or variable is selected it is highlighted in Eclipse with some color. Can anyone advice where to change that color? I'm working under Windows OS.
I've found where to change it:
Preferences -> General -> Editors -> Text Editors -> Annotations
and there you have to change both "Occurrences" and "Write occurrences".
Preferences -> General -> Editors -> Text Editors
Current Line Highlight
I think you want the above
else
Preferences -> Java -> Editor -> Syntax Coloring
Element -> Java -> Method or Variable
Check Enable and select color
This has made me mad for about half an hour.
If the issue appears in JavaScript files, the option is under Preferences -> General -> Editors -> Text Editors -> Annotations and in the Annotation types choose JavaScript Occurences. Mine was set to black, nasty little thing took me too long to fix.
If you're using eclipse with PHP package and want to change highlighted colour then there is slight difference to above answer.
Right click on highlighted word
Select 'Preferences'
Go to General > Editors > Text Editors > Annotations. Now look for "PHP elements 'read' occurrences" and "PHP elements 'write' occurrences". You can select your desired colour there.

Eclipse Spaces & Tabs

I like to display 4 spaces as tab in eclipse, with an actual width on the screen of 2 spaces.
When I save the file, I'd like to have 4 spaces (represented as «.») for a tab:
1st.level
....2nd.level
........3rd.level
In eclipse, I'd like to see this, where a tabstop (represented as «->>») should take the width of two spaces:
1st.level
->2nd.level
->->3rd.level
Is such a behavior possible? Does someone know any addons for that?
Thank you in advance,
~Chris
AnyEdit tools sounds like what you might need.
Open "Preferences" -> "General" -> "Editors" -> "Text Editors"
Set "Displayed tab width" to the number of spaces you would like it to insert.
Tick the Box that says "Insert spaces for tabs"

How to auto-remove trailing whitespace in Eclipse?

The question has two parts, one of which I already have the answer for.
How to auto-remove trailing whitespace from the entire file being edited? -> Answer: use the AnyEdit plugin, which can be set to do that on any save to the file.
How to auto-remove trailing whitespace only from the lines I changed? -> This I don't know and would appreciate any help.
I assume your questions is with regards to Java code. If that's the case, you don't actually need any extra plugins to accomplish 1). You can just go to Preferences -> Java -> Editor -> Save Actions and configure it to remove trailing whitespace.
By the sounds of it you also want to make this a team-wide setting, right? To make life easier and avoid having to remember setting it up every time you have a new workspace you can set the save action as a project specific preference that gets stored into your SCM along with the code.
In order to do that right-click on your project and go to Properties -> Java Editor -> Save Actions. From there you can enable project specific settings and configure it to remove trailing whitespace (among other useful things).
NB: This option has been removed in Eclipse Kepler (4.3) and following releases.
NB #2: The option seems to be back in Eclipse Luna - Luna Service Release 1a (4.4.1)
Removing whitespace from the entire file being edited:
Preferences -> Java -> Editors -> Save Actions -> check Perform the selected actions on save -> check Additional actions -> click Configure.. -> go to Code organizing tab -> check Remove trailing whitespace -> select All lines.
Removing whitespace only from the lines I changed:
Preferences -> Java -> Editor -> Save Actions -> check "Perform the selected actions on save -> check Format source code -> select Format edited lines.
Note it is not necessary to click Configure the formatter settings on the Formatter page - all the code styles automatically include removing trailing whitespace. At least I couldn't find a setting for this in Formatter configuration, and it worked out of the box for built-in Java Conventions, Eclipse, Eclipse 2.1 styles, as well as GoogleStyle.
When using this set-up, you obviously need to also turn off the solution to part 1 of the question.
Eclipse version checked: 4.5.2, 4.11
You don't need any plugin to do so. For instance, if you code JAVA, you can erase trailing whitespaces configuring save actions:
Eclipse 3.6
Preferences -> Java -> Editors -> Save Actions -> Check Perform the selected actions on save -> Check Additional actions -> Click the Configure.. button.
In the Code organizing tab, check Remove trailing whitespace
PyDev can do it by either Ctrl+Shift+F if you have code formatter option set to do it, or by during saving:
Eclipse -> Window -> Preferences -> PyDev -> Editor -> Code Style -> Code Formatter:
I use at least these:
Auto format before saving
Right trim lines?
Add new line at end of file
Do following:
Preferences -> Java -> Editor -> Save Actions
You can map a key in Eclipse to manually remove trailing whitespaces in the whole file, but only on request instead of automatically at save. (Preference/Keys and then map a set of keys to File/Remove Trailing Whitespace) This can be useful if you want to sanitize all new files, but keep legacy code untouched.
Another strategy is to activate visual display of whitespace, so at least you'll know when you're adding some trailing whitespace. As far as I know, there's no way to display only trailing whitespace though, but I'll be glad to be proved wrong.
In a pinch, for those editors that don't support removal of trailing whitespace at all (e.g. the XML editor), you can remove it from all lines by doing a find and replace, enabling regular expressions, then finding "[\t ]+$" and replacing it with "" (blank). There's probably a better regex to do that but it works for me without needing to install AnyEdit.
I would say AnyEdit too. It does not provide this specific functionalities. However, if you and your team use the AnyEdit features at each save actions, then when you open a file, it must not have any trailing whitespace.
So, if you modify this file, and if you add new trailing spaces, then during the save operation, AnyEdit will remove only these new spaces, as they are the only trailing spaces in this file.
If, for some reasons, you need to keep the trailing spaces on the lines that were not modified by you, then I have no answer for you, and I am not sure this kind of feature exists in any Eclipse plugin...
It is impossible to do it in Eclipse in generic way right now, but it can be changed given with basic Java knowledge and some free time to add basic support for this https://bugs.eclipse.org/bugs/show_bug.cgi?id=180349
The dependent issue: https://bugs.eclipse.org/bugs/show_bug.cgi?id=311173
For php there is also an option:
There is a really easy way to do this with sed, the Unix command line tool. You could probably create a macro in Eclipse to run this:
sed -i 's/[[:space:]]*$//' <filename>
As #Malvineous said, It's not professional but a work-around to use the Find/Replace method to remove trailing space (below including tab U+0009 and whitespace U+0020).
Just press Ctrl + F (or command + F)
Find [\t ][\t ]*$
Replace with blank string
Use Regular expressions
Replace All
extra:
For removing leading space, find ^[\t ][\t ]* instead of [\t ][\t ]*$
For removing blank lines, find ^\s*$\r?\n
I am not aware of any solution for the second part of your question. The reason is that it is not clear how to define I changed. Changed when? Just between 2 saves or between commits... Basically - forget it.
I assume you would like to stick to some guideline, but do not touch the rest of the code. But the guideline should be used overall, and not for bites and pieces. So my suggestion is - change all the code to the guideline: it is once-off operation, but make sure that all your developers have the same plugin (AnyEdit) with the same settings for the project.
I used this command for git: git config --global core.whitespace cr-at-eol
It removes ^M characters that are trailing.

how to hide the text limit line in netbeans 6.5?

Is there a way to hide the text limit line in netbeans 6.5?
In NetBeans 6.9, setting Right Margin to 0 effectively hides the text limit line.
Set the value in Preferences > Editor > Formatting > All Languages > Right Margin.
(Mac OS X 10.6.4, NetBeans 6.9)
line is not moving to 200 column, but you can hide it setting its color to same as the background
You can set it to 0. So It will not be visible.
Are you talking about the line running thru the right side, by default at the 80 column point? That is Options -> Editor -> Indentation -> Right margin. I have it set at 200 columns which pushes it off the right side of the screen.
Hi~ I found out how to hide "Text limit line" :)
Tools -> Options -> Export(Popup Win) -> Browse.. (Select target "ccc.zip" file)
Select Options for Export : Check at "Editor" -> OK
Edit xml file "\Editors\Preferences\org-netbeans-modules-editor-settings-CustomPreferences.xml" in "ccc.zip" file.
<entry javaType="java.lang.Boolean" name="text-limit-line-visible" xml:space="preserve">
<value><![CDATA[false]]></value></entry>
Tools -> Options -> Import "ccc.zip" file
Done
As for now (October '18) in NetBeans 8.2 + 9 you can hide the text limit line or actually change its color by going to Options -> Fonts & Colors -> Highlighting -> Text Limit Line -> Foreground
Remember to go to tools, options, fonts & colors, highlighting tab, text limit line selected before exporting ccp.zip....
There is an easy way to disable the warning generated by NetBeans for number of lines.
Goto Tools > Options > Editor > Hints
Find the checkbox Too Many Lines > un-check the checkbox
and click Apply.
Enjoy :)
Have you tried to see if your project properties have formatting that overwrites the global properties?
See below:
https://bz.apache.org/netbeans/show_bug.cgi?id=223329