Split a string in Java
Split method in String class will break a string into tokens or array. By specify regular expression as delimiters, as the example below.Split a string into array, using a space as delimiter.
String str = "This is a test string"; String words = str.split(" "); for (int i=0; i < words.length; i++) System.out.println(words[i]);
Output: This is a test string
In some case that delimiter has a special meaning in a regular expression. You must add two backslashes (\\..) in front of the delimiter to make it as a character rather than the wildcard in a regular expression. Some examples of delimiter that has a special meaning are a dot(.), a star(*) , ‘|’ etc.
For a dot, must use delimiter as “\\.”
String str = "123.456.789.10.11"; String words = str2.split ("\\."); for (int i=0; i < words.length; i++) System.out.println(words[i]);
The special character needs to be escaped with a “\” but since “\” is also a special character in Java, you need to escape it again with another.