Parsing a string using regex [duplicate]

Question

I'm trying to slpit the string /home/user/test.dat I use String[] split = file.split("(?!.*/)"); but split[1] only returns the first character instead of the whole file name. How would I edit my regex so that it returns everything past the last forward slash?

I expect test.dat while split[0] already returns everything before it — Peter Bucher
– Peter Bucher, Commented Nov 23, 2015 at 3:32
Do you need to use regex here? There may be better tools go get file name. — Pshemo
– Pshemo, Commented Nov 23, 2015 at 3:32
Refresh page with this post and see linked duplicate at top. — Pshemo
– Pshemo, Commented Nov 23, 2015 at 3:34

Elliott Frisch · Accepted Answer · 2015-11-23 03:34:09Z

2

Unless there's some compelling reason to use a regular expression, I would use the simple String.lastIndexOf(int). Something like,

String file = "/a/b/c/d/e/test.dat";
int afterSlash = file.lastIndexOf('/');
if (afterSlash > -1) {
    file = file.substring(afterSlash + 1);
}
System.out.println(file);

Output of above being (the requested)

test.dat

answered Nov 23, 2015 at 3:34

Elliott Frisch

202k20 gold badges166 silver badges265 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Naruto Over a year ago

Yes ...if you want only file name than rather go with lastIndexOf() method ...

abc123 · Accepted Answer · 2015-11-23 03:33:34Z

1

Regex

\/((\w+)\.(\w+))$

Regular expression visualization

Debuggex Demo

However, since you are using Java simply load the string into the File helper which can pull out the filename:

Java

Path p = Paths.get("C:\\Hello\\AnotherFolder\\The File Name.PDF");
String file = p.getFileName().toString();

answered Nov 23, 2015 at 3:33

abc123

19k7 gold badges55 silver badges84 bronze badges

Collectives™ on Stack Overflow

Parsing a string using regex [duplicate]

2 Answers 2

1 Comment

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Linked

Related