How to split string by specific keywords?

Question

I have a String

String value ="Caused by:null pointer exception Caused by
                             : BeanCreationException.. WARNING: its just a warning..";

I would like to split String after keywords "Caused by:" and "WARNING:" so that I have output like

null pointer exception
BeanCreationException..
its just a warning..

Any help would be much appreciated.

The SO way is to first try , post what you tried and what did not work and then ask for help. — Subir Kumar Sao, Oct 13 '14 at 06:36
Possible duplicate of [How to split a String in Java](http://stackoverflow.com/questions/3481828/how-to-split-a-string-in-java). — jww, Oct 13 '14 at 07:36

score 3 · Accepted Answer · answered Oct 13 '14 at 06:49

You can use Caused by: or WARNING: as your delimiters

Code:

String value ="Caused by:null pointer exception Caused by"
        + ": BeanCreationException.. WARNING: its just a warning..";
String[] sp = value.split("Caused by:|WARNING:");
Stream.of(sp).forEach(s -> System.out.println(s));

Output:

 null pointer exception 
 BeanCreationException.. 
 its just a warning..

Note: some part of code is in Java 8

score 1 · Answer 2 · answered Oct 13 '14 at 06:38

1

try using split() method

String str="Caused by:null pointer exception Caused by: BeanCreationException.. WARNING: its just a warning..";

String split[]=str.split("Caused by");

split() will return a array containing words before and after the split trem

answered Oct 13 '14 at 06:38

Nishad K Ahamed

1,374
15
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3

OP wants to split by "Caused by" and "WARNING" substrings at once. Your solution splits the string by only "Caused by" substring. – Aycan Yaşıt Oct 13 '14 at 06:40
@Aycan, OP can try out the rest.. – Nishad K Ahamed Oct 13 '14 at 06:44
Doesn't this answer contain essence of the solution. This gives a simple understandable point of beginning. – Niroshan Oct 13 '14 at 06:51

Aycan Yaşıt · Answer 3 · 2014-11-23T08:05:04.157

You want to treat multiple substrings as separators. So my approach would be to transform all my separator substrings to a common separator, then split it by that separator.

String value ="Caused by:null pointer exception Caused by BeanCreationException.. WARNING: its just a warning..";

//Transforming substrings to a common separator
value = value.replace("Caused by:", "||");
value = value.replace("WARNING:", "||");

//Just splitting the string by separator
String valueArray = value.split("||");

score 1 · Answer 4 · answered Oct 13 '14 at 06:46

1

You can use |(OR) in #split method

value.split("Caused by:|WARNING:")

NOTE:It will give you first element empty in array if your String starts with Caused by: or WARNING: so be careful with that.

answered Oct 13 '14 at 06:46

akash

22,664
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score 0 · Answer 5 · answered Oct 13 '14 at 06:39

0

You can use String.split(REQUIRED_SEPARATOR) or new StringTokenizer(inputString, "REQUIRED_SEPARATOR")

While using the StringTokenizer, you can iterate through the tokens by using hasMoreElements() and use nextToken() to access tokens.

answered Oct 13 '14 at 06:39

Pramod Karandikar

5,289
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score 0 · Answer 6 · answered Oct 13 '14 at 06:44

0

Try using String.indexOf("Caused by:") to find all occurences of Caused by: then String.indexOf("WARNING:") to find all warnings.

answered Oct 13 '14 at 06:44

Alexander Vasin

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How to split string by specific keywords?

6 Answers6