If I split "hello|" and "|hello" with "|" character, then I get one value for the first and two values for the second version.
String arr1 = new String("hello|").split("\\|");
String arr2 = new String("|hello").split("\\|");
System.out.println("arr1 length: " + arr1.length + "\narr2 length: " + arr2.length);
arr1 length: 1
arr2 length: 2
According to java docs.
split creates an empty String if the first character is the separator, but doesn't create an empty String (or empty Strings) if the last character (or consecutive characters) is the separator. You will get the same behavior regardless of the separator you use.