Question

I need to check whether a string contains white spaces commas and more than one @ signs. I used the following method to do so, but it didn’t work properly for me.

boolean flag = string.matches("\\s,@");

Can anyone of you tell me what has gone wrong in it?

Answer 1

Try this

Pattern pattern = Pattern.compile("[,\\s]|@.*@");
Matcher m = pattern.matcher(your_string);
boolean  b = m.find();