If you just skip the comment token, it will be discarded. If you want to 
retain it, you have to use the "setHiddenAfter" / "setHiddenBefore" 
methods mentioned in the antlr wiki. Once the comments are stored there, 
you have to take care that you print them while traversing the tree for 
output.

Andreas

vasanthi a schrieb:
> HI All
>  
> I have the below code for java grammar comment
>  
>
> // Single-line comments
>
> SL_COMMENT
>
> : "//" (~('\r'|'\n'))* {$setType(Token.SKIP);}
>
> ;
>
> After instrumenting the java code, it is removing the java comments . 
> Can you please let me know how to retain the comments
>
> after instrumenting the code..
>
>  
>
> Please let me know, as I am stuck up with this from quite long time
>
>  
>
> Vasanthi.
>
>  
>
>  
>
>  
>
>  
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