package de.gultsch.chat.utils; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Validator { public static final Pattern VALID_JID = Pattern.compile("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}$", Pattern.CASE_INSENSITIVE); public static boolean isValidJid(String jid) { Matcher matcher = VALID_JID.matcher(jid); return matcher.find(); } }