Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isPassword(String pwdString) { String regEx = "[~!@#$%^&*<>]"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(pwdString); if (m.find()) { return false; } return true; } }