How to collapse blocks of code in Eclipse?

Question

Some days ago my Eclipse was working fine and a +/- appeared in every block that could be collapsed (functions, classes, etc.)... but now it does appear, and I don't know how to activate that feature again.

It's Eclipse Helios, running on a Gentoo Linux box.

In Preferences -> C++ -> Editor -> Folding there is a checkbox: "Enable folding of control flow statements". You may not see anything immediately because computing the fold points may happen slowly in the background, or it may be necessary to invoke the "Reset Structure" command shift+ctrl+numpad_multiply, to get eclipse to show all the fold points. — Phill Apley, May 14 '14 at 15:39

score 98 · Accepted Answer · answered Aug 10 '10 at 15:57

98

Preferences -> C++ -> Editor -> Folding ?

Make a right click in the editor window and go to preferences there, then only the editor-relevant section of the preferences dialog will appear. This works for JDT, CDT etc...

answered Aug 10 '10 at 15:57

IanH

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Another way is to right-click the narrow vertical bar has has all of the (+)/(-) little pluses and minuses. The option to fold the code will be there. – Anonsage Mar 19 '13 at 16:19
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In current Eclipse, I do not see any "Folding" option under editor for each language. Instead, @KennyPeng's answer is what works for me. – ToolmakerSteve Jun 24 '15 at 16:26

score 60 · Answer 2 · edited Oct 14 '19 at 11:37

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You can do ( Ctrl + Numpad_Divide ) to enable folding.
Also if you Right Click on the area where the + or - was supposed to be, you can see there is a folding option.

edited Oct 14 '19 at 11:37

Ahmed Nabil

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answered Aug 10 '10 at 15:59

Kenny Peng

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That option is selected and working but I want folding for If/else and switch cases... How can I get that ? – Amit Dec 26 '12 at 09:24
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C + S + Num / - does a collapse all. I had accidentally hit C + / - and voila no more code folding. Thanks this helped to get it back! – Gishu Sep 11 '14 at 16:27

score 19 · Answer 3 · answered Aug 10 '10 at 15:58

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Try this option: Preferences > Java > Editor > Folding > Enable folding

answered Aug 10 '10 at 15:58

Chris Lercher

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score 15 · Answer 4 · edited Aug 17 '17 at 06:33

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To collapse all code blocks Ctrl + Shift+ /

To expand all code blocks Ctrl + Shift+ *

pydev:

To collapse all code blocks : Ctrl + 0

To collapse all code blocks : Ctrl + 9

Is there a way to collapse all code blocks in Eclipse?

by @partizanos and @bummi

edited Aug 17 '17 at 06:33

Sunil Garg

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answered Apr 13 '15 at 03:51

Thiago

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score 11 · Answer 5 · edited Sep 11 '12 at 13:05

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For Python it is as follows:

collapse all 1 level: Ctrl+9
expand all 1 level: Ctrl+0
collapse current: Ctrl+-
expand current: Ctrl++

Hope that helps.

edited Sep 11 '12 at 13:05

Paul D. Waite

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answered Jun 07 '11 at 10:23

mmrs151

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score 7 · Answer 6 · answered Apr 11 '11 at 22:13

In Preferences, you'll find General > Keys. It's for setting your keyboard shortcuts.

What I use it for more often, though, is to find stuff in Eclipse. You should see an input box labelled "type filter text." It's as close as Eclipse comes to a search feature for every Eclipse command.

score 3 · Answer 7 · answered Aug 10 '10 at 15:59

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I assume you are using Java, but look under the settings for your particular language.

Under the Window menu, select Preferences.

Under Java->Editor->Folding. Select "Enable Folding".

answered Aug 10 '10 at 15:59

Starkey

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That option is selected and working but I want folding for If/else and switch cases... How can I get that ? – Amit Dec 26 '12 at 09:23
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@Amit as far as i know, you can't. – ApproachingDarknessFish Nov 28 '13 at 04:08
In Preferences -> C++ -> Editor -> Folding there is a checkbox: "Enable folding of control flow statements". – Phill Apley May 14 '14 at 15:03
Computing the fold points may happen slowly in the background, or it may be necessary to invoke the "Reset Structure" command shift+ctrl+numpad_multiply, to get eclipse to show all the fold points. – Phill Apley May 14 '14 at 15:35

score 1 · Answer 8 · answered Jun 28 '17 at 20:30

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For windows eclipse using java: Windows -> Preferences -> Java -> Editor -> Folding

Unfortunately this will not allow for collapsing code, however if it turns off you can re-enable it to get rid of long comments and imports.

answered Jun 28 '17 at 20:30

Elijah

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score 1 · Answer 9 · answered Apr 18 '11 at 22:10

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If you want folding an all your editors, I found you can enable Folding in

Preferences > Editors > Structured Text Editors

Enable Folding

answered Apr 18 '11 at 22:10

Brig

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score 1 · Answer 10 · answered Nov 12 '20 at 16:08

Here you go!

Right Click on + button appeared on numbering strip on left most side --> Folding --> Expand All
Right Click on + button appeared on numbering strip on left most side --> Folding --> Collapse All

This way you can expand and collapse all the methods on the file.

Plus Buttons on numbering strip

Context Menu:

Context Menu

score 0 · Answer 11 · answered Jun 01 '15 at 18:25

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In CFEclipse: Preferences > CFEclipse > Editor > Code Folding > Initially Collapse column, you can uncheck to see all expanded when opening, or check all boxes to close all when opening a file.

answered Jun 01 '15 at 18:25

Kim Wilson

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score 0 · Answer 12 · answered Jun 21 '17 at 07:58

I was using salesforce apex classes with Eclipse Neon 3.3 for Java.
I found an option "define folding region" on right click in the editor, I selected the block of code i wanted to collapse and selected this property for that code. Now I am seeing + and - symbol to expand and collapse that block of code

How to collapse blocks of code in Eclipse?

12 Answers12

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