Here you can find the source of isBase(URI base, URI uri)
private static boolean isBase(URI base, URI uri)
//package com.java2s; /*/*from w w w .j a v a2s . c om*/ * 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. */ import java.net.URI; public class Main { private static boolean isBase(URI base, URI uri) { String path = uri.getRawPath(); if (path == null || "/".equals(path)) { return true; } if (base != null) { URI rel = base.relativize(uri); if (rel.getRawPath() == null || rel.getRawPath().length() <= 0 || rel.equals(uri)) { return true; } } return false; } }