Java - Splitting a String based on a String and a new line

Question

I want to produce an array that splits a string based on either a string of text within it that it called "stop" and I also want to split based on the presence of a new line (\n).

However, it doesn't seem to split based on the presence of a new line, how would I do this? So far I have:

String[] myArray = str.split("stop");

But I want to include splits are a new line, but I can't seem to do this through the methods I have tried.

The data returned is a string containing something such as the following:

data1stopdata2stopdata3\n

So I would want to put the strings data1 and data2 into the array, and then also data3 into the array without the additional line.

Do you want an array (1 dimension) or a matrix (2 dimensions)? I mean sould data1stopdata2stopdata3\ndata4stopdata5stopdata6\n give {"data1","data2","data3","data4","data5","data6"} or{{"data1","data2","data3"},{"data4","data5","data6"}} — C.Champagne
– C.Champagne, Commented Feb 3, 2012 at 14:54

gioele · Accepted Answer · 2012-02-03 14:45:10Z

5

Use split("stop|\\n"). The argument to String#split is a String that contains a regular expression.

Have a look at http://www.vogella.de/articles/JavaRegularExpressions/article.html and http://www.regular-expressions.info/java.html. They discuss exactly your problem.

answered Feb 3, 2012 at 14:45

gioele

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2 Comments

RanRag Over a year ago

if his string is data1stopdata2stopdata3\n your method will give data1 data2 data3\n

mino Over a year ago

@RanRag That does seem to split the string successfully. I also have a if statement for data3 that equates it to another string without the \n, this returns true, so I can only assume the \n is removed after the split too. Why do you think it leaves the data\n with the line? And if I'm wrong please describe how, and why.

hovanessyan · Accepted Answer · 2012-02-03 14:47:03Z

0

Keep in mind that if you want to get a system independent line separator, you better use:

System.getProperty("line.separator");

answered Feb 3, 2012 at 14:47

hovanessyan

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Comments

stryba · Accepted Answer · 2012-02-03 14:47:06Z

0

Shouldn't something like this work:

String[] a=str.split("(stop|\\n)");

Untested though.

answered Feb 3, 2012 at 14:47

stryba

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RanRag · Accepted Answer · 2012-02-03 14:47:56Z

0

Try this,

String number = "data1stopdata2stopdata3\\n";
String[] number_array = number.split("stop|\\n");

for(String s: number_array)
System.out.println(s.replace("\\n",""));

Output = data1 data2 data3

answered Feb 3, 2012 at 14:47

RanRag

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Comments

Bilal Syed Hussain · Accepted Answer · 2012-02-03 14:50:07Z

0

Use str.split("Stop|\\n"); e.g

    String str = "Data1\nData2StopData";
    String[] a = str.split("Stop|\\n");
    System.out.println(Arrays.toString(a));

Will give [Data1, Data2, Data]

answered Feb 3, 2012 at 14:50

Bilal Syed Hussain

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xehpuk · Accepted Answer · 2012-02-03 15:05:14Z

0

In addition to the given answers, I'd rather user split("stop|\n") instead of split("stop|\\n"). The first expression uses Java's built-in support for line feed, whereas in the second the regular expression "\n" is interpreted as a line feed. So there's less overhead in the first expression.

answered Feb 3, 2012 at 15:05

xehpuk

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Kris · Accepted Answer · 2012-02-03 14:44:51Z

-2

You can use Google Guava Splitter.on(Pattern p) method. Set your pattern to include "stop" as well as "\\r?\\n"

answered Feb 3, 2012 at 14:44

Kris

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