Here you can find the source of passwordContainInvalidCharacter(String password)
public static boolean passwordContainInvalidCharacter(String password)
//package com.java2s; /*************************************************************************** * Copyright (c) 2012-2015 VMware, Inc. All Rights Reserved. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License./*from w w w . j a v a 2 s .c o m*/ ***************************************************************************/ import java.util.regex.Pattern; public class Main { public static boolean passwordContainInvalidCharacter(String password) { Pattern pattern = Pattern.compile("[a-zA-Z0-9_@#$%^&*]+"); if (!pattern.matcher(password).matches()) { return true; } return false; } }