import java.lang.reflect.Method;
import java.util.ArrayList;

public class Test1 {

    /**
     * @param args
     * @throws NoSuchMethodException
     * @throws SecurityException
     */
    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub
        ArrayList<Integer> al = new ArrayList<Integer>();
        al.add(11);
        al.add(22);
        al.add(33);
        Method m = al.getClass().getMethod("add", Object.class);
        m.invoke(al, "hello world1");
        m.invoke(al, "hello world2");
        m.invoke(al, "hello world3");
        System.out.println(al.toString());
    }
    

}