All Questions

3
answers

java.lang.NullPointerException

I have a small problem that I did not understand, it is that my application is giving me the following error after having programmed the Web Service . here I leave the code: public class Winery { private static final String wineURL =...
asked on 01.11.2016 / 19:52
2
answers

How to format number (with points in values of one thousand (1,000) to a jquery datatable

I can not order a numeric column, I'm ordered but the points are taken as decimals and I need the format to be the opposite. Thanks for the help!     
asked on 27.10.2016 / 14:19
2
answers

Java function to find numbers

I am trying to write a program to show the list of coquette numbers cousins of a number of figures entered by the user (between 2 and 15 ). I already have the functions of capicúa and cousin. But the problem I have is how to make...
asked on 30.10.2016 / 05:50
3
answers

Calculate time between two dates: hours, minutes and seconds

I am calculating a range of days between two dates with hours, minutes and seconds as follows: function calcularDiasAusencia(fechaIni, fechaFin) { var fecha1 = new Date(fechaIni.substring(0,4),fechaIni.substring(5,7),fechaIni.substring(8,10)...
asked on 24.11.2016 / 01:31
3
answers

Validation, Filter results in SQL

Good morning, I have a query that returns values of several functions and I need to filter it with another table B since I do not want it to show the record if it exists in table B This is the query I want to filter SELECT FormaPago, NDCH, CO...
asked on 24.11.2016 / 15:09
2
answers

Regular php expression between tags

I need to get this number 2769 inside these tags with a regular expression in php <td style="background-color:#b0c400;border-bottom:1px solid #ffffff;text-align:right;padding:0px 5px 0px 5px;color:#000000;">2769</td> I tried to...
asked on 26.10.2016 / 14:03
1
answer

Creating controls on forms

I'm starting Java, I'm using IntelliJ IDEA, creating a desktop app, I'm creating a form and adding controls, like Label , TextBox , Button and I see that everything is done by code: public class frmLogin extends JFrame {...
asked on 24.11.2016 / 15:50
1
answer

MySQL composite wrench

I need a composite key for a database of 10 fields, in the database schools are registered through its cct (which would be the primary key) but I also need to be able to register the same cct but with a different shift ( field that must be relat...
asked on 23.06.2017 / 00:38
1
answer

Change a string of a string to bold

I'm doing a program in VB and I have a text string, which I add to a RichTextBox , but I want to add some things to it. What I want to achieve is that the text be like the following: " More than most of the measurements that...
asked on 21.06.2017 / 00:15
3
answers

Why can not I create an ArrayList without parameters?

It tells me that the constructor does not have parameters when in the API 7 java an ArrayList can be built without paramentros ie empty. import java.util.Iterator; import java.util.List; public class ArrayList { public static void main(St...
asked on 20.06.2017 / 18:58