import java.lang.reflect.Method;

public class StubTest {
    public static void main(String[] args) throws Exception{
        Class<?> clazz= Class.forName("com.nbinfo.test.StubTest");
        Object ob = clazz.newInstance();
        Method method = clazz.getMethod("showMsg", String.class);
        
        method.invoke(ob, "HelloWorld");
    }
    
    public void showMsg(String msg){
        System.out.println(msg);
    }
}