Load a class dynamically in Java

gistfile1.java

    private Class<?> clazz = null;
    
    public MonitorResinThread(Timer timer) {
        super(timer, 1);
        //Make sure the class is only load once
        try {
            String homePath = "/Home/folder/to/jar";
            File file = new File(homePath + "/lib/resin.jar");
            URL url = new URL("jar", "", "file:" + file.getAbsolutePath() + "!/");
            URL[] urls = new URL[] { url };
            ClassLoader loader = URLClassLoader.newInstance(urls, getClass()
                    .getClassLoader());
            this.clazz = Class.forName("com.class.name",
                    true, loader);
        } catch (Exception e) {
            this.clazz = null;
        }
    }