how to split a String on date format

Question

I have a below string value in my java class.

Nazar 1:46 PM Hello, I have few questions related to API Management 1:46 PM Sadhana has joined

I want to split it on the basis of time mentioned in it. It should show a output in such a way that whenever a time value comes, it creates a new line break. Like below:

Nazar 1:46 PM Hello, I have few questions related to API Management. 1:46 PM Sadhana has joined

How can I accomplish this.

Have a look at java.langString's split function and regex. (Google: java regex) — TungstenX, Jan 11 '16 at 08:01
Try [`(?i)\s+(?=\b\d{1,2}:\d{1,2}\s*[AP]M)`](https://regex101.com/r/mL6tJ2/2). See [Java demo](https://ideone.com/dsMfbn) — Wiktor Stribiżew, Jan 11 '16 at 10:59

Patrick · Accepted Answer · 2016-01-11T16:29:58.793

2

You can also use this regex.

(?=\b(((11|12|10|(0[1-9]{1})):)|[\d]:)[0-5][0-9](\s)?(?i)(am|pm))

Descritpion:

It should match hh:mm AM/PM and also h:mm AM/PM.

hh    -> hours 01-09 or 10,11,12 or 1-9
mm    -> minutes 00-59
AM/PM -> case insensitive

Usage:

 String text = "Nazar 11:46 PM Hello, I have few questions related to API Management 10:46 PM "
            + "Sadhana has joined 06:35 AM its early 6:50 PM and late";

    String texts[] = text.split("(?=\\b(((11|12|10|(0[1-9]{1})):)|[\\d]:)[0-5][0-9](\\s)?(?i)(am|pm))");  

    for(String s : texts){
        System.out.println(s);
    }

Output:

Nazar 
11:46 PM Hello, I have few questions related to API Management 
10:46 PM Sadhana has joined 
06:35 AM its early 
6:50 PM and late

edited Jan 11 '16 at 16:29

answered Jan 11 '16 at 09:07

Patrick

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That's not a semicolon, that's a colon. – David Conrad Jan 11 '16 at 09:23
unable to split when I change the time to 11:46 and 10:46. – JPG Jan 11 '16 at 10:23
@JSK I updated my answer. I hope it catches your needs. – Patrick Jan 11 '16 at 16:31

Titus · Answer 2 · 2016-01-11T12:16:58.240

1

You can try something like this:

str.split("(?=\\d{1,2}:\\d{1,2} (AM|PM))");

edited Jan 11 '16 at 12:16

answered Jan 11 '16 at 08:02

Titus

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unable to split when I change the time to 11:46 and 10:46. – JPG Jan 11 '16 at 10:40

anubhava · Answer 3 · 2016-01-13T07:17:33.883

1

You can use this regex to split:

String[] arr = str.split("(?=(?<!\\d:)\b\\d{1,2}:\\d{1,2}(?::\\d{1,2})? [AP]M\b)\\s*");

It is important to use word boundaries \b on either side of lookahead pattern:

RegEx Demo

edited Jan 13 '16 at 07:17

answered Jan 11 '16 at 10:43

anubhava

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Thank you, anubhava. Your code worked for me. But right now there is one more issue raised. The issue is that input string can contain two time formats at same time. i.e. 1:46 PM & (2:49:02 PM). How can I split that particular string that contain both of these time formats, in line wise. Your guidance needed. – JPG Jan 13 '16 at 07:08

score 0 · Answer 4 · answered Jan 11 '16 at 10:55

This regex should create your desired output.

String s = "Nazar 1:46 PM Hello, I have few questions related to API Management 10:46 PM Sadhana has joined";
String s1[] = s.split("(\\s)(?=([01]?\\d:[0-6]?\\d\\s?([Aa]|[Pp])[Mm]))");
for (String s2 : s1) {
    System.out.println(s2);
}

score 0 · Answer 5 · edited May 23 '17 at 12:31

0

Java has a class called Matcher using which you can find the occurrences of a given pattern.

This question has suitable solution in the link : Get the index of a pattern in a string using regex

edited May 23 '17 at 12:31

Community

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answered Jan 12 '16 at 02:04

Harish Kumar

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how to split a String on date format

5 Answers5