CODEWITHSUNDEEP
javaregexstringsplit
Ahmad Ibrahem
Ahmad Ibrahem

Reputation: 117

how to split strings using Java ?

i tried to split a string looks like this 

<a><b><c></c></b></a>

with java using the following code 

String[] s =input.split("[<>]+");
System.out.println(Arrays.toString(s));

and this was the output

[, a, b, c, /c, /b, /a]

i don't know what should i do to get rid of this empty string in the beginning of the resulting array.
any suggestions ?

Upvotes: 1

Views: 728

Answers (5)

Bryan
Bryan

Reputation: 2211

There is an alternative method using regular expression matching:

String input = "<a><b><c></c></b></a>";

Pattern p = Pattern.compile("<(.+?)>");
Matcher m = p.matcher(input);

ArrayList<String> s = new ArrayList<String>();

while(m.find())
    s.add(m.group(1));

System.out.println(s.toString());

Output: [a, b, c, /c, /b, /a]

Upvotes: 4

stratwine
stratwine

Reputation: 3701

If you are up for using Google Guava library, then Splitter has a neat way to omit empty strings using Splitter#omitEmptyStrings().

Upvotes: 1

Zernike
Zernike

Reputation: 1766

It's normally. If you want to remove first empty element use next:

    String input = "<a><b><c></c></b></a>";
    String[] strs = input.split("[<>]+");
    String[] s =Arrays.copyOfRange(strs, 1, strs.length);

Or go in cycle looking for empty elements.

Upvotes: 1

soulcheck
soulcheck

Reputation: 36767

If you're sure about the input format you can do:

String[] s =input.substring(1).split("[<>]+");
System.out.println(Arrays.toString(s));

Upvotes: 0

SERPRO
SERPRO

Reputation: 10067

You will need to iterate through all the elements to get rid of the empty ones..

Upvotes: 0

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