Java tutorial
//package com.java2s; /* * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 { /** * Returns the prefix of a specified QName. * * @param qname * the specified QName in string, e.g. ns:value * @return the prefix of the QName, e.g. ns */ public static String getPrefixOfQName(String qname) { int index = qname.indexOf(':'); if (index < 0) { return null; } else { return qname.substring(0, index); } } }