Split a String Using Java Regular Expression?

Question

<189>131: *Jan  2 13:20:47.581: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up

From the above String, I want to split the the following:

 189  -between <>
    Jan  2 13:20:47.581  -between * %
    LINEPROTO 
    5
    UPDOWN
    FastEthernet0/1 - after string Interface
    up  -after String state to status

Final String array will be:

[189],[Jan  2 13:20:47.581],[LINEPROTO],[5],[UPDOWN],[FastEthernet0/1],[up]

How do I do this using java regex?

First of all did you try using regex?..Any error that you came across while using it? — sTg, Jan 04 '14 at 07:08
i tried withhttp://stackoverflow.com/questions/11255353/java-best-way-to-grab-all-strings-between-two-strings-regex — user2413387, Jan 04 '14 at 07:10

acarlon · Accepted Answer · 2014-01-04T07:41:59.500

This regex will capture the groups that you required:

<(.+)>.+?[*](.+?)%(LINEPROTO)-(.+?)-(.+?):.+?Interface (.+?), changed state to (.+)

The groups are (separated by commas):

189,Jan 2 13:20:47.581:,LINEPROTO,5,UPDOWN,FastEthernet0/1,up

Note that Jan 2 13:20:47.581: includes the ':' since you indicated that you wanted everything between * and %.

Explanation of the regex:

() are groups.
+? is non-greedy
[*] is the '*' character rather than the regex operator.

Also, I assume that you didn't want the literal 'LINEPROTO' (even though your instructions seemed to indicate you do). In which case you will want:

<(.+)>.+?[*](.+?)%(.+)-(.+?)-(.+?):.+?Interface (.+?), changed state to (.+)

Update based on comment

Updated regex is:

<(.+)>.+?[*](.+?): %(.+)-(.+?)-(.+?):.+?Interface (.+?), changed state to (.+)

Groups will be: 189, Jan 2 13:20:47.581, LINEPROTO, 5, UPDOWN, FastEthernet0/1, up

Thanks for the reply i want first array element as 189 instead of 9 and Jan 2 13:20:47.581 instead of Jan 2 13:20:47.581: — user2413387, Jan 04 '14 at 07:35
@user2413387 - I have updated to satisfy this - see the last regex. — acarlon, Jan 04 '14 at 07:42

score -1 · Answer 2 · answered Jan 04 '14 at 07:16

-1

You'll want to look into JavaScript's substr or split..Should help you out.

answered Jan 04 '14 at 07:16

sTg

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Split a String Using Java Regular Expression?

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