How to find which jars and in what order are loaded by a classloader?

Question

I could not find a clear answer to this question elsewhere, so I\'ll try here:

Is there some way (programmatic or other) to get a list of JARs/classes loaded by an A

Answer 1

As an alternative way, you can use this code snippet. The result is a file that consist of related jar files to a class-loader and class files that are loaded by an object's class-loaders (chain of class-loaders including its parents until root class-loader). Class-loaders are seperated by stars.

Object obj = this;
ClassLoader classLoader = obj.getClass().getClassLoader();
File file = new File("classlodersClassesJars.txt");
if(file.exists()) {
    file.delete();
}
if(classLoader != null) { // to escape from system classes that are loaded by bootstrap class-loader such as String.
    do {
        try {
            Class clClass = classLoader.getClass();
            while(clClass != ClassLoader.class){
                    clClass = clClass.getSuperclass();
            }
            java.lang.reflect.Field domainField = clClass.getDeclaredField("domains");
            java.lang.reflect.Field classesField = clClass.getDeclaredField("classes");
            domainField.setAccessible(true);
            classesField.setAccessible(true);
            HashSet domains = (HashSet) domainField.get(classLoader);
            Vector classes = (Vector) classesField.get(classLoader);
            FileOutputStream fos = new FileOutputStream("classlodersClassesJars.txt", true);
            fos.write(("\n******************** " + classLoader.toString() + "\n").getBytes());
            fos.write(Arrays.toString(classes.toArray()).getBytes());
            Object[] reverseDomains = domains.toArray();
            org.apache.commons.lang.ArrayUtils.reverse(reverseDomains);
            fos.write(Arrays.toString(reverseDomains).getBytes());
            fos.close();
            classLoader = classLoader.getParent();
        } catch (Exception exception) {
            exception.printStackTrace();
            // TODO
        }
    } while (classLoader.getParent() != null);
}