Apache Commons Lang 3 is the 3rd version of Apache Commons Lang, which provides a host of helper utilities for the java.lang API.

Apache Commons Lang 3 Source Code files are provided in both binary packge (commons-lang3-3.12.0-bin.zip) and source package (commons-lang3-3.12.0-src.zip). You can download them at Apache Commons Lang Website.

Apache Commons Lang 3 Source Code has no dependencies and is compatible with Java 8 and newer versions. You can compile it to generate your own version of Apache Commons Lang 3 JAR file.

You can also browse the source code below:

⏎ org/apache/commons/lang3/ClassLoaderUtils.java

/*
 * 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.
 */

package org.apache.commons.lang3;

import java.net.URLClassLoader;
import java.util.Arrays;

/**
 * Helps work with {@link ClassLoader}.
 *
 * @since 3.10
 */
public class ClassLoaderUtils {

    /**
     * Converts the given class loader to a String calling {@link #toString(URLClassLoader)}.
     *
     * @param classLoader to URLClassLoader to convert.
     * @return the formatted string.
     */
    public static String toString(final ClassLoader classLoader) {
        if (classLoader instanceof URLClassLoader) {
            return toString((URLClassLoader) classLoader);
        }
        return classLoader.toString();
    }

    /**
     * Converts the given URLClassLoader to a String in the format
     * {@code "URLClassLoader.toString() + [URL1, URL2, ...]"}.
     *
     * @param classLoader to URLClassLoader to convert.
     * @return the formatted string.
     */
    public static String toString(final URLClassLoader classLoader) {
        return classLoader + Arrays.toString(classLoader.getURLs());
    }
}

⏎ org/apache/commons/lang3/ClassLoaderUtils.java

Or download all of them as a single archive file:

File name: commons-lang3-3.12.0-sources.jar
File size: 651724 bytes
Release date: 2020-01-22
Download 

⇒ Download and Install commons-lang3-3.8.1-bin.zip

⇐ Download Apache Commons Lang v3 Source Package

⇑ Downloading and Reviewing commons-lang.jar

⇑⇑ FAQ for Apache commons-lang.jar