I want to split a string which has content like this:
The split function takes a regular expression, not a string, to match. Your regular expression uses a special character - in this case '$' - so you would need to change it to escape that character:
String line = ... String lineData = line.split("\\$");
Also note that split returns an array of strings - Strings are immutable, so they cannot be modified. Any modifications made to the String will be returned in a new String, and the original will not be changed. Hence the
lineData = line.split("\\$"); above.