001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.lang3;
019
020import java.net.URLClassLoader;
021import java.util.Arrays;
022
023/**
024 * Helps work with {@link ClassLoader}.
025 *
026 * @since 3.10
027 */
028public class ClassLoaderUtils {
029
030    /**
031     * Converts the given class loader to a String calling {@link #toString(URLClassLoader)}.
032     *
033     * @param classLoader to URLClassLoader to convert.
034     * @return the formatted string.
035     */
036    public static String toString(final ClassLoader classLoader) {
037        if (classLoader instanceof URLClassLoader) {
038            return toString((URLClassLoader) classLoader);
039        }
040        return classLoader.toString();
041    }
042
043    /**
044     * Converts the given URLClassLoader to a String in the format
045     * {@code "URLClassLoader.toString() + [URL1, URL2, ...]"}.
046     *
047     * @param classLoader to URLClassLoader to convert.
048     * @return the formatted string.
049     */
050    public static String toString(final URLClassLoader classLoader) {
051        return classLoader + Arrays.toString(classLoader.getURLs());
052    }
053}