CODEWITHSUNDEEP
javaregex
user2833546
user2833546

Reputation: 25

Matching "\n" in string

This may have been asked before but I haven't come across an answer. I have a string that looks like

" ___________________ \n|_ | ___ _ _|\n| | | _|___|"

which I am passing to a java program as a command line argument. Literally just paste that string as a command line argument.

The first line in my program is

String [] array = args[0].split("\n");

I want to split it on the "\n" but I can't seem to do it with split("\n") or split("\\n"). What am I doing wrong?

Upvotes: 1

Views: 144

Answers (5)

piet.t
piet.t

Reputation: 11911

If your string is passed in containing literal backslashes you have to match it using split("\\\\n").

Explanation: to match a backslash in regex you have to excape it, so the regex is \\n. To input this through a java String-literal you have to excape each of the two backslashes in the regex, so it becomes "\\\\n".

...just don't ask me about matching double backslashes ;-)

Upvotes: 0

newuser
newuser

Reputation: 8466

\n   -  New Line Feed      
\r   -  Carriage Return    


String input = "___________________ \n|_ | ___ _ _|\n| | | _|___|";
String[] splitValue = input.split("[\\r\\n]+");

Upvotes: 1

Shyam
Shyam

Reputation: 6444

Try this

String lines[] = String.split("\\r?\\n");

Upvotes: 2

Piyush
Piyush

Reputation: 2050

String data=" ___________________ \n|_ | ___ _ _|\n| | | _|___|";       
String data1[]=data.split("\\n");
System.out.println(data);

Gives output.

 ___________________ 
|_ | ___ _ _|
| | | _|___|

Upvotes: 1

upog
upog

Reputation: 5531

try

String str =" ___________________ \n|_ | ___ _ _|\n| | | _|___|";
String[] arr = str.split("\n");
System.out.println(Arrays.deepToString(arr));

Upvotes: 2

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