Java String split

The java string split() method splits this string against given regular expression and returns a char array.

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Signature

There are two signature for split() method in java string.

1. public String split(String regex)  
2. and,  
3. public String split(String regex, int limit)  

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Parameter

regex : regular expression to be applied on string.

limit : limit for the number of strings in array. If it is zero, it will returns all the strings matching regex.

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Returns

array of strings

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Throws

PatternSyntaxException if pattern for regular expression is invalid

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Since

1.4

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Java String split() method example

The given example returns total number of words in a string excluding space only. It also includes special characters.

1. public class SplitExample{  
2. public static void main(String args[]){  
3. String s1="java string split method by javatpoint";  
4. String[] words=s1.split("\\s");//splits the string based on string  
5. //using java foreach loop to print elements of string array  
6. for(String w:words){  
7. System.out.println(w);  
8. }  
9. }}  

Output

java
string
split
method
by
javatpoint

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Java String split() method with regex and length example

1. public class SplitExample2{  
2. public static void main(String args[]){  
3. String s1="welcome to split world";  
4. System.out.println("returning words:");  
5. for(String w:s1.split("\\s",0)){  
6. System.out.println(w);  
7. }  
8. System.out.println("returning words:");  
9. for(String w:s1.split("\\s",1)){  
10. System.out.println(w);  
11. }  
12. System.out.println("returning words:");  
13. for(String w:s1.split("\\s",2)){  
14. System.out.println(w);  
15. }  
16.   
17. }}  

Output

returning words:
welcome 
to 
split 
world
returning words:
welcome to split world
returning words:
welcome 
to split world