I want to split a String, using " " but .split() gives me empty strings in the array, which I don't want.
I tried this:
String[] arr = " hello world! b y e ".split(" ",0);
Output:
["", "", "", "", "", "hello" and so on....
Expected Output:
["hello","world!","b","y","e"]
How can I achieve this?
First, trim the string, then split by one or more whitespace (\s+).
String string = " hello world! b y e ";
String[] arr = string.trim().split("\\s+");
// output: ["hello", "world!", "b", "y", "e"]
trim() call, the result would be ["", "hello", "world!", "b", "y", "e"]. The trimming is use to eliminate the first empty string in the result. The split() method automatically eliminates the ending "" value, that would be present is called with -1 as second parameter.+ in the regex pattern passed to split eliminates repeating spaces.
split("\\s+") splits the trimmed string by consecutive spaces.