Java tutorial
//package com.java2s; //License from project: Apache License import java.util.regex.Pattern; public class Main { public static boolean isPassword(String input) { String regex = "^[0-9a-zA-Z|,|.|;|~|!|@|@|#|$|%|\\\\^|&|*|(|)|_|+|\\-|=|\\\\\\\\|/|<|>]+$"; Pattern p = Pattern.compile(regex); return p.matcher(input).matches(); } }