Questions tagged as 'java'

Tagged questions
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Problems getting data from a Label in JavaFX

Good afternoon, I am starting a simple example for the data acquisition of a Label in JavaFX, however I am having difficulties, most of the sources told me to perform as follows: public class MainApp extends Application { @FXML private Label...
asked by 03.03.2017 / 19:36
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Primefaces (TabView): Null properties when saving

I'm using a TabView with two tabs and each tab with an external file with fields. By clicking the "Save" button the attributes are coming as null. Here is the code: Registered Clients.xhtml: ... <h:form id="frm-cadastro-cliente-dialog"&g...
asked by 27.02.2017 / 20:13
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Problem with Menupop

Hello, so this is not the first time I have been having problem with RecyclerView.ViewHolder, in this case now the following happens, My menu has 2 buttons I'm trying to get the click with switch (item.getItemId ()) I really do not know if this...
asked by 25.02.2017 / 19:13
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I need to get the list of songs

I wanted to print the list of songs stored in an array listaMusica : System.out.println(p.listarMusicas()); This is the method for saving the data: Musica v = new Musica(t, a, d, ano, g); p.addMusica(v)...
asked by 27.02.2017 / 05:34
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Rotate an image that is in an array

Good afternoon, I have a color image in a 1D array, for example: int[] image = {255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 255, 0, 255, 0, 255, 0, 0}; This array has 6 pixels, red, green, blue, blue, green, red, imagining that these pixels are...
asked by 18.03.2017 / 22:45
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How to transform the FindIterable of a query in the database (mongoDB) to a list of DTO objects.

   Bank structure: >db.produtos.find().pretty(); { "_id" : ObjectId("58879057e53276e2f7bf43be"), "descricao" : "Bisnaguinha", "preco" : 4.8 } { "_id" : ObjectId("58879067e53276e2f7bf43bf"), "descicao" : "Nutella", "...
asked by 24.01.2017 / 18:57
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Java Poi does not download

I'm using the poi 3.15 library to generate excel on a web system, but I'm having a hard time downloading the file locally, but when I do it does nothing. I put it in the beginning like this: String caminho = System.getProperty("user.home");...
asked by 14.02.2017 / 22:11
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Questions about encryption

I'm looking at how encryption works, however, I'm having a question about almost all the cryptography examples examples have a String PlainText, follows the link from one of the post I looked at: link This post has the following code: pub...
asked by 15.02.2017 / 17:58
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Error querying data in JTable with Hibernate

The following error occurred while querying the data: INFO: HHH000182: No default (no-argument) constructor for class: Classes.Funcionario (class must be instantiated by Interceptor) Hibernate: select funcionari0_.ID_Funcionario as ID_Fun...
asked by 09.01.2017 / 22:57
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How to change getRealPath () save location? Photocam primefaces

I'm trying to use the Photocam component of Primefaces, it's working, but the image is saved within the target of the application. I want to change the rescue location. Here's a snippet of the code. ExternalContext externalContext = FacesCo...
asked by 10.01.2017 / 11:30