A java method used to locate and return all classes in a folder that extend a certain class (input), it takes a package string as input also (e.g. "example.example2"

Class Finder

package me.project.fileSearch;

import java.io.File;
import java.io.FilenameFilter;
import java.net.URL;
import java.util.List;



public class ClassFinder{
	public static <R extends T, T> List<T> search(String packageName, List<T> list,  Class<T> type) throws ClassNotFoundException, InstantiationException, IllegalAccessException{
	URL root = Thread.currentThread().getContextClassLoader().getResource(packageName.replace(".", "/"));

	// Filter .class files.
	File[] files = new File(root.getFile()).listFiles(new FilenameFilter() {
		public boolean accept(File dir, String name) {
			return name.endsWith(".class");
		}
		});

// Find classes implementing Class<T> type.
	for (File file : files) {
		String className = file.getName().replaceAll(".class$", "");
		Class<R> cls = (Class<R>) Class.forName(packageName + "." + className);
		if(cls != null && cls.getSuperclass() == type){
			T elem = cls.newInstance();
			list.add(elem);
		}		
		}
	return list;
	}

	
}