如何使用反射实现回调

我在一个jar中有这个构造函数：

public ClientListFragment(String[] values, OnActionListener onActionListener)
{
    this.values = values;
    this.setOnActionListener(onActionListener);
}

这是抽象类OnActionListener:的实现

public abstract class OnActionListener {
    public abstract void onAction(int actonId);
}

在主项目中，创建一个此类的实例，该实例位于一个jar中：

 final String libPath = Environment.getExternalStorageDirectory() + "/myapi.jar";
           final File tmpDir = new File(libPath);
           final DexClassLoader classloader = new DexClassLoader(libPath, tmpDir.getAbsolutePath(), null, this.getClass().getClassLoader());
           final Class<Object> classToLoad = (Class<Object>) classloader.loadClass("com.api.fragment.ClientListFragment");

//In this constructor, we inform an array of String and not know how to pass the callback of the abstract class
           Constructor constructor = classToLoad.getConstructor(new Class[]{String[].class});
//get a instance
           Object fragmentListClients = constructor.newInstance(items);

我的问题是：如何在Java中通过反射向加载的类报告回调？即如何：

onActionListener = new OnActionListener() {
            @Override
            public void onAction(int actonId) {
            }
        };