com.dx.ss.plugins.ptree.utils.ClassloaderUtility.java Source code

Introduction

Here is the source code for com.dx.ss.plugins.ptree.utils.ClassloaderUtility.java

Source

/**
 *    Copyright 2006-2016 the original author or authors.
 *
 *    Licensed 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 com.dx.ss.plugins.ptree.utils;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

import org.apache.commons.lang3.StringUtils;

/**
 * This class holds methods useful for constructing custom classloaders.
 * 
 * @author Jeff Butler
 * 
 */
public class ClassloaderUtility {

    /**
     * Utility Class - No Instances
     */
    private ClassloaderUtility() {
    }

    public static ClassLoader getCustomClassloader(String classpathEntry) {
        File file = null;
        try {
            if (StringUtils.isNotBlank(classpathEntry)) {
                file = new File(classpathEntry);
                if (file.exists()) {
                    ClassLoader parent = Thread.currentThread().getContextClassLoader();
                    URLClassLoader ucl = new URLClassLoader(new URL[] { file.toURI().toURL() }, parent);
                    return ucl;
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
        return null;
    }
}