Questions tagged as 'java'

Tagged questions
1
answer

How to send a report from a menu item in primefaces?

I have a menubar with several options and within one, that is, in a submenu I want to send a report, which I already have but it is shown through a button, and I do not want it to be that way, I want the choose in the submenu in automatic show t...
asked by 21.01.2018 / 06:19
1
answer

404 Whitelabel Error Page

I'm practicing with Spring JPA. I have the following code @Controller @RequestMapping("/empleados") public class EmpleadoController { @Autowired @Qualifier("empleadoRepository") private EmpleadoRepository empleadoRepository;...
asked by 21.01.2018 / 19:13
0
answers

How can I get the boats to be placed in the matrix without touching?

The two 1 represent a ship, the two 2 represent a ship and the two 3 represent another ship. the boats have 2 cells of size and must be placed using random and without touching. How can I get the boats to place themselves in the matrix withou...
asked by 20.01.2018 / 18:12
2
answers

Can a boolean be modified in a serializable binary file?

As I read on some websites, you can not modify the object, but you can change the value of a Boolean variable. The point is that I do it in the following way and it does not show any error, but when I make the modification and print the object i...
asked by 25.01.2018 / 21:30
0
answers

how can I add columns to a table of primefaces depending on the days of the month?

I have a table in primefaces that works as a calendar, I currently put in 31 columns, but the table must show the days according to the month, so how can you do it not to show all the 31 days, if it is February that only show the 28 days for exa...
asked by 25.01.2018 / 23:18
1
answer

Read from a sheet Google Sheets

I am developing an application on Android using Google Sheets as a database. In my Google Sheets sheet I have information stored about books (author, title, date, etc), and I want to recover it and paint it in a ListView . On the one ha...
asked by 21.01.2018 / 21:05
2
answers

Display data from a matrix

I need help to show the data of a matrix, I use a variable a, which indicates the number of records (columns) it will have and 4 are the rows or fields it contains (identification, name, address, phone), The problem I have is that I need to ente...
asked by 22.01.2018 / 02:26
0
answers

Problem in java (windowBuilder)

I have a problem, my Java program consists of different panels, which are visible or not depending on the selected menu option, but when you start the program when you move the cursor over the panel that appears by default the buttons of other p...
asked by 17.01.2018 / 12:03
0
answers

Retain checkbox values using searchview and recycler view

My question is when looking for elements of a recycler view with a searchview and select them if I take the selected cardview but send me other values, I had it as a save position but when looking I take the positions wrong, then I'm taking...
asked by 23.01.2018 / 19:08
0
answers

JavaFX problem with JfileChooser

Hello colleagues, you will see I have a question, I'm doing a program which I need to attach files to show me in a textarea and then when I click on the save button, ask me the route to which I want to keep these attachments here I leave the par...
asked by 23.01.2018 / 16:27