Questions tagged as 'java'

Tagged questions
2
answers

How to add items in a combobox dynamically in Java? [closed]

I have a project on netbeans that uses Java Swing for the interface. I have some data in MYSQL that would like to show them as soon as the window is created. Finally, how can I dynamically place items in a JComboBox in Java?     
asked by 01.12.2016 / 16:45
2
answers

Checkbox - how to check if at least 1 cbx was selected

Hello, I have a set of 8 checkBoxs. Does anyone know how I can check if at least 1 of them has been selected? Thank you     
asked by 02.12.2016 / 19:55
2
answers

Add mm: ss of a column in jtable

Good afternoon, I know that the way I explain it is complicated to help me. I have a jTable that contains a column where times are shown, those times in mm: ss. I need to calculate the average between these times. I made several attempts with...
asked by 18.07.2016 / 20:55
1
answer

How to save information in an array?

Java masters, I'm learning about arrays, vectors, and would like to know what happens to my code as I create an array to get six names and six positions for the matrix employees. But when I print, I just print jobs and are not printing the names...
asked by 20.10.2016 / 20:16
1
answer

Call page xhtml by commandButton

I'm implementing the toolbar component of primefaces and inside this component there are several commandButtons that I need when clicking it call another xhtml page of my project. How to do? ex: <p:commandButton type="button" value="Cadastr...
asked by 16.05.2016 / 12:54
1
answer

Error - JSF and PrimeFaces

Error when trying to register user, the following message appears: accordion:dtNasc: '22-02-1990' could not be understood as a date. XHTML: <p:outputLabel class="lt" value="Data de Nascimento:" /> <p:calendar id="dtNasc" value="#...
asked by 18.05.2016 / 14:15
1
answer

Method being called several times

I have a problem. The method of adding Message is being called several times and is adding messages until the application is closed. I have no idea what is causing this, I will put the sending parts, if anyone knows how to help , thank you! F...
asked by 23.11.2016 / 20:39
1
answer

Move File in Java

How can I change the directory of a file in java? I already researched a lot and could not find a functional way to move files to another directory in java.     
asked by 29.04.2016 / 04:27
1
answer

Read a CSV file

I was able to import csv into my cell phone, but when I try to read the file so that the application inserts the information inside the csv, an error occurs:    java.io.FileNotFoundException: table.csv:   open failed: ENOENT (No such file or...
asked by 16.06.2016 / 20:20
1
answer

How to minimize Main frame when opening a new frame

I have a problem, I created a java application with a menu that calls several screens. When I opened some screen, I wanted my main application screen to be minimized. I tried with setvisible(false) but it did not work out as expected....
asked by 13.06.2016 / 16:54