Well your regular expression is certainly jarbled - there are clearly characters (like $
and .
) that your expression won't match, and you don't need to \\
escape ,
s. Lets first describe our requirements, you seem to be saying a valid string is defined as:
A string consisting of 6 commas, with one or more characters before each one
We can represent that with the following pattern:
(?:[^,]+,){6}
This says match one or more non-commas, followed by a comma - [^,]+,
- six times - {6}
. The (?:...)
notation is a non-capturing group, which lets us say match the whole sub-expression six times, without it, the {6}
would only apply to the preceding character.
Alternately, we could use normal, capturing groups to let us select each individual section of the matching string:
([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),?
Now we can not only match the string, but extract its contents at the same time, e.g.:
String str = "$d4kjvdf,78953626,10.0,103007,0,132103.8945F,";
Pattern regex = Pattern.compile(
"([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),?");
Matcher m = regex.matcher(str);
if(m.matches()) {
for (int i = 1; i <= m.groupCount(); i++) {
System.out.println(m.group(i));
}
}
This prints:
$d4kjvdf
78953626
10.0
103007
0
132103.8945F