How to comment a block in Eclipse

Question

Does Eclipse have a hot key to comment a block  and to uncomment a block

User · Answer

I have Eclipse IDE for Java Developers Version  Juno Service Release 2 and it is - Every line prepended with    ctrl     for both  comment and uncomment

User · Answer

For single line comment you can use Ctrl   and for multiple line comment you can use Ctrl   Shift     after selecting the lines you want to comment in java editor   On Mac OS X you can use       to comment out single lines or selected blocks

User · Answer

Eclipse Oxygen with CDT  PyDev   Block comments under Source menu  Add Comment Block Ctrl   4  Add Single Comment Block Ctrl Shift 4  Remove Comment Block Ctrl   5

User · Answer

Ctrl-  to toggle      comments and Ctrl-Shift-  to toggle         comments  At least for Java  anyway - other tooling may have different shortcuts    Ctrl-  will remove a block of either comment  but won t add comments   Note  As for Eclipse CDT 4 4 2  Ctrl-Shift-  will not uncomment a         block comment  Use Ctrl-Shift-  in that case   EDIT  It s Ctrl on a PC  but on a Mac the shortcuts may all be Cmd instead  I don t have a Mac myself  so can t easily check

User · Answer

For Eclipse Editor  For Single Line  Toggle Effect   Comment   Ctrl Shift c  Uncomment  Ctrl Shift c  For Multiple Lines  Toggle Effect   Select the lines you want to comment   comment   Ctrl Shift c  Uncomment  Ctrl Shift c  It is for all html   css   jsp   java   It gives toggle effect

User · Answer

It depends upon the version of OS - for me it works with Command   7

User · Answer

For JAVA     Single line comment                      this is a single line comment   To comment   Ctrl   Shift   C  To uncomment  Press again Ctrl   Shift   C  Multiple line comment                                                                            First  select all the lines that you want to comment uncomment then   To comment   Ctrl   Shift   C  To uncomment  Press again Ctrl   Shift   C  I hope  this will work for you

User · Answer

In addition  you can change Eclipse shortcut in Windows -  Preferences -  General -  Keys

User · Answer

As other answers pointed out  the following shortcuts are defined by default  I m referring to editing java source - shortcut bindings can be found in eclipse Window Preferences  under  General   Keys   search for  comment      to add a block comment  the shortcut  binding  is  Ctrl   Shift     to remove a block comment  the shortcut  binding  is  Ctrl   Shift       Unfortunately  these shortcuts did not work for me  on Eclipse Java EE IDE for Web Developers  version  Juno Service Release 2    The reason  I think  is my keyboard layout  QWERTZ keyboard layout used in Germany - see here for further information   where     actually has to be written via  Shift   7    I therefore had to change the shortcut bindings for comments  just did it for editing java source  in the eclipse preferences  under  General   Keys   as follows    Change the binding of command  Add Block Comment   when  Editing Java Source   from  Ctrl   Shift      to  Ctrl   Shift   7  Change the binding of command  Remove Block Comment   when  Editing Java Source   from  Ctrl   Shift      to  Ctrl   Shift   8  Unbind the binding  Ctrl      for command  Toggle Comment   when  Editing Java Source    instead of assigning a new binding  I simply unbound this shortcut  as there already was one with Ctrl 7 and one with Ctrl Shift C  which both work for me

User · Answer

for java code  if you want comments single line then put double forward slash before code of single line manually or by pressing Ctrl    example     System Out println  HELLO     and for multi-line comments  Select code how much you want to comments and then press  Shift CTRL     Now for XML code comments use Select code first and then press Shift CTRL    for both single line and multi-line comments

User · Answer

I came here looking for an answer and ended up finding it myself  thanks to the previous responses   In my particular case  while editing PHP code on Eclipse Juno  I have found that the previous commands won t work for me  Instead of them  I should press Ctrl  7  on the superior number key  to obtain the double bar comment         There s no way I can comment them with the previous mentioned key combinations

User · Answer

Select the text you want to Block-comment Block-uncomment    To comment  Ctrl   6   To uncomment  Ctrl   8

User · Answer

Using Eclipe Oxygen  command   Shift   c on macOSx Sierra will add remove comments out multiple lines of code

User · Answer

I have Mac  I was also facing problem to comment multiple line in STS I have tried single line comment  command    Multi line comment  control command     Multi line uncomment  control command     And it was success

User · Answer

Using Eclipse Mars 1 CTRL     on Linux in Java will comment out multiple lines of code  When trying to un-comment those multiple lines  Eclipse was commenting the comments  I found that if there is a blank line in the comments it will do this  If you have 10 lines of code  a blank line  and 10 more lines of code  CTRL     will comment it all  You ll have to remove the line or un-comment them in blocks of 10

User · Answer

There are two possibilities   Every line prepended with     ctrl     to comment ctrl     to uncomment   Note  on recent eclipse cdt  ctrl     is used to toggle comments  and ctrl     has no more effect   Complete block surrounded with block comments     ctrl   shift     to comment ctrl   shift     to remove

User · Answer

For single line comment just use    and for multiline comments use       your code here

[eclipse] How to comment a block in Eclipse?

Every line prepended with //

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