Java tutorial
//package com.java2s; /******************************************************************************* * Copyright 2011 Google Inc. All Rights Reserved. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * 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 the given name, or null if there is no prefix. */ public static String getPrefix(String name) { int colonLocation = name.indexOf(':'); return colonLocation == -1 ? null : name.substring(0, colonLocation); } }