Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.lang.instrument.Instrumentation;
import java.util.Map;
import java.util.WeakHashMap;

public class Main {
    /**
     *
     * @param name
     *            the fully qualified classname
     * @return
     */
    static Map<String, ClassLoader> classLoaderCache = new WeakHashMap<String, ClassLoader>();
    private static Instrumentation instrumentation;

    static synchronized public ClassLoader getCachedClassLoader(String name) {

        if (classLoaderCache.get(name) != null)
            return classLoaderCache.get(name);
        ClassLoader cl = getClassLoaderByName(name);
        classLoaderCache.put(name, cl);
        return cl;
    }

    /**
     * Use instrumentation to get the class loader for a given class.
     *
     * @param name
     *            the fully qualified classname
     * @return the classloader
     */
    static public ClassLoader getClassLoaderByName(String name) {

        Class<?>[] allLoadedClasses = instrumentation.getAllLoadedClasses();

        ClassLoader cl = null;
        for (Class<?> c : allLoadedClasses) {
            if (c.getName().equals(name)) {
                cl = c.getClassLoader();
                break;
            }
        }

        return cl;
    }
}