Here is my example file :
lineone one
RUN lineone two
lineone three
RUN lineone four
I want to select all lines not starting with run, here is how I did it :
^([^RUN])
Is it possible to match all lines not starting with RUN and then append them to the back of the previous line ? like this
lineone one RUN lineone two
lineone three RUN lineone four
If your example is correct you just need to replace "\nRUN" with " RUN".
System.out.println(yourString.replaceAll("\nRUN", " RUN"));
Result:
lineone one RUN lineone two lineone three RUN lineone four
First of all
^([^RUN])
does not work correctly as it will match any line that does not start with either R, U or N.
You should use lookahead:
^(?!RUN)
This should do what you want:
Pattern p = Pattern.compile("\n(RUN)", Pattern.DOTALL);
Matcher matcher = p.matcher("lineone one\nRUN lineone two\nlineone three\nRUN lineone four");
String replaceAll = matcher.replaceAll(" $1");
System.out.println(replaceAll);
