Comment/uncomment a block of code in NetBeans shortcut

Question

Is there a shortcut in NetBeans to highlight a block of code and comment/uncomment it?

Girish · Answer 1 · 2018-06-04T05:36:03.890

111

Try this combination in the Netbeans Editor: ctrl + shift + c

edited Jun 04 '18 at 05:36

answered Jul 09 '13 at 09:57

Girish

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or else ctrl + / – Bunny Joel May 23 '18 at 08:18

score 60 · Accepted Answer · edited Feb 21 '14 at 12:34

60

The list of keyboard shortcuts can be found in the NetBeans Wiki.

Turn On/Off Search Result highlights

Alt + Shift + H

Add/remove comment. Should work for all languages

Ctrl + / or in mac ⌘ + /

edited Feb 21 '14 at 12:34

Michel Ayres

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answered Jan 06 '10 at 01:18

lofte

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Can't get Ctrl + / to work on a swedish keyboard, worked with Girish answer. – Henrik Lindgren Mar 30 '14 at 12:26
11

netbeans only comments by line `//`. How can you do block comments? `/* */` – t q Sep 29 '16 at 14:09

Willem Van Onsem · Answer 3 · 2017-05-30T09:50:31.297

An IDE independent trick (that works for all languages in the C/Java/C++/C# family) I found to comment/uncomment blocks of code fast is the following:

int a = 5;
int b = 2;
//*
if(a < b) {
    int t = a;
    a = b;
    b = t;
}
//*/
System.out.println("a: "+a);

Say you want to comment and uncomment the if block frequently. You can use the //* and //*/ markers. You comment the block by removing one / in the //* part. Thus:

int a = 5;
int b = 2;
/*
if(a < b) {
    int t = a;
    a = b;
    b = t;
}
//*/
System.out.println("a: "+a);

Why this works

In case the first line reads //*, it is interpreted as // *, thus you comment the * and don't comment the remainder of the block. The //*/ is ignored as well since it is interpreted as // */.

In case the first line reads /*, it is interpreted as the start of a comment block. Java searches for the corresponding end which is // */ (the // is ignored).

I use a similar trick for switching between two chunks of code. `/**/` at the start, `/*/` between the two chunks, and `/**/` at the end. Simply remove or re-add one of the asterisks from the first comment to switch between blocks. — Samah, Mar 08 '15 at 01:45

score 1 · Answer 4 · answered Mar 08 '17 at 04:15

1

In mac, it is more stable to use command+shift+c. Sometimes, command+/ could be usable but not so stable.

answered Mar 08 '17 at 04:15

htlbydgod

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2
8

score 1 · Answer 5 · answered May 01 '18 at 15:49

1

Also, to have a whole block commented, can be useful the rectangular selection trick as a single "null column" rectangle where we can add any comment character we like (eg. an hash or a slash):

The shortcut in Mac is Ctrl+Shift+R as explained in this thread.

To return to the normal selection just repeat the same shortcut.

answered May 01 '18 at 15:49

RikiRiocma

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you type multiple lines with this shortcut but its very useful – themhz Sep 11 '19 at 13:13

Comment/uncomment a block of code in NetBeans shortcut

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