Java tutorial
//package com.java2s; /******************************************************************************* * Software Name : RCS IMS Stack * * Copyright (C) 2010 France Telecom S.A. * * 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. ******************************************************************************/ public class Main { /** * Get parameter value from SDP parameters string with parameter-value * format 'key1=value1; ... keyN=valueN' * * @param paramKey parameter name * @param params parameters string * @return if parameter exists return {@link String} with value, otherwise * return <code>null</code> */ public static String getParameterValue(String paramKey, String params) { String value = null; if (params != null && params.length() > 0) { try { java.util.regex.Pattern p = java.util.regex.Pattern.compile("(?<=" + paramKey + "=).*?(?=;|$)"); java.util.regex.Matcher m = p.matcher(params); if (m.find()) { value = m.group(0); } } catch (java.util.regex.PatternSyntaxException ex) { } } return value; } }