All Questions

2
answers

I capture null value when I make a select to the database

Well, the problem is: I do not capture the value that exists in the database, especially in field codsubmenu , it is only capturing null values. I leave the code. public class Menu implements Serializable{ private int idMenu; pr...
asked on 19.01.2016 / 04:49
1
answer

How to make a pipe in your own shell?

I'm creating a UNIX and there was a question: How to pipe in your own ? The command in String is a table respP This is an idea but I have not managed to apply it: if(tube==1){ //printf("\n\n\n"); // En el caso de un pipe, m...
asked on 08.01.2016 / 16:13
1
answer

Repeat playback of animated banner

I made an animated banner in Google Web Designer and I can already see it in the browser, but only one is displayed or reproduced. time. How can I make it play infinitely?     
asked on 18.01.2016 / 16:45
2
answers

In a TabbedActivity with a ViewPager, the ListView are cut off from below

I have a TabbedActivity with three Fragments of type list but I get cut off below: I've tried everything but I do not know what to do. This is the TabbedActivity layout: <?xml version="1.0" encoding="utf-8"?...
asked on 26.01.2016 / 08:54
1
answer

Inheritance in the classes

I have a question about the classes, is it about if having two classes (a father and another daughter) could get a list (global) that is in the father and join new elements from the daughter? And if that is how I could do it, then I have mana...
asked on 30.12.2018 / 19:49
0
answers

Concept of step by reference and value

I know that the subject has already been commented and I have been checking in detail the contributions that have been presented during each one, thanks to them I think I have managed to really capture the concept but I still have doubts about w...
asked on 31.12.2018 / 02:29
0
answers

Copy of last file in Robocopy

I am using robocopy and I have a little doubt. Does anyone know how I can do to copy the files .rar but only those that were created today? This is the sentence I have but it does not work for me: robocopy "C:\Users\Usuario\De...
asked on 28.12.2018 / 08:51
1
answer

How to generate a json of an object that comes from forms.ModelForm

Hi, I would like to create and save an object in the database which has arguments args and kwargs . the arguments args and kwargs must obey the format JSON , I have the following: class ProgramarActividadForm(f...
asked on 20.01.2016 / 13:28
1
answer

I have this error Warning: mysqli num rows () expects parameter 1 to be mysqli result, boolean given

I have implemented a notification system, but I made a small addition to the connection and I get this error: Warning: mysqli num rows() expects parameter 1 to be mysqli result, boolean given But I do not know what it means or what I would...
asked on 24.12.2018 / 16:06
1
answer

How to make me return the variable with the assigned values within a TRY

public Usuario buscar(final Usuario nombreUsuario) { Log.i("Usuario:", nombreUsuario.toString()); final Usuario usuario = new Usuario(); final String url = EstructuraURL.URL_LOGIN; StringRequest stringRequest = new StringReques...
asked on 31.12.2018 / 03:29