JavaTimer.java

import java.util.Timer;
import java.util.TimerTask;
import java.lang.reflect.Method;

public class JavaTimer {
    public Timer timer;

    public JavaTimer(long ms, Object obj, String methodName, String[] paramTypes, Object[] params) {
        try {
            timer = new Timer();
            TimerTask task = new TimerTask() {
                @Override
                public void run() {
                    try {
                        Method method = Callback.getMethod(methodName, obj, paramTypes);
                        Callback cb = new Callback(method, obj, params);
                        cb.invoke();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    timer.cancel();
                }
            };
            timer.schedule(task, ms, 1);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}