Java tutorial
import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; /* Derby - Class org.apache.derby.iapi.util.PropertyUtil 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 { /** * Absolutize a relative resource path on the given absolute base path. * * @param path The absolute base path * @param resource The relative resource path * @return The absolutized resource path */ public static String absolutize(String path, String resource) { if (path == null || path.isEmpty()) { return resource; } else if (resource == null || resource.isEmpty()) { return path; } else if (resource.charAt(0) == '/') { // Resource path is already absolute return resource; } boolean slash = (path.charAt(path.length() - 1) == '/'); StringBuffer b = new StringBuffer(path.length() + 1 + resource.length()); b.append(path); if (!slash) { b.append('/'); } b.append(resource); return b.toString(); } }