Questions tagged as 'java'

Tagged questions
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Remove default message @Pattern JPA

I need a help from you. I'm creating a web service rest in java using jersey and hibernate. To validate the fields reported by the caller I used the JPA @Pattern annotation, as follows: @XmlRootElement public class Cfop { @Pattern(regexp = "[...
asked by 09.11.2016 / 22:12
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How popular jtable with xml file titles [closed]

Hello, I have a cruel question of how to do something, I need a JTable with a list of xml files that are in a certain folder, but I have no idea how to do it or how to search for something . How do I add a JTable to a JTable? How do I get a JTab...
asked by 11.11.2016 / 17:59
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Eclipse maven | lambda | use -source 8 or higher to enable lambda expressions

Java Maven project in Eclipse neon (4.6.0), simply does not compile when using lambda. The error:    use lambda expressions are not supported in -source 1.5 (use -source 8   or higher to enable lambda expressions) The detail is that I'...
asked by 07.09.2016 / 19:34
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Eclipse Error: Intializing Java Tooling

When initializing the Eclipse IDE, the Initializing Java Tooling error is displayed. How do I fix this?     
asked by 06.09.2016 / 17:24
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Why is my String names accepting integers instead of letters?

import java.util.Scanner; public class Tp1 { public static void main (String [] args){ final int qtdAlunos = 5; String [] nomes = new String[qtdAlunos]; double[] av1 = new double[qtdAlunos]; double[] av2 = new double[qt...
asked by 08.11.2016 / 20:14
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JAVA Date Comparison

Good people I have a array of strings with dates, coming from a query with Firebase database. I want to organize it in a growing number of dates. Ex: 05/09/2016 - 09/09/2016 - 11/11/2016 Dates are entered into my array by the pop...
asked by 05.09.2016 / 00:38
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Button that overlays all screens

How to make a floating button that overlays all screens, especially the screens outside the application. In the image there are 2 examples of floating buttons     
asked by 05.09.2016 / 19:05
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Error. WARN: WELD-000335: Conversation context is already active

I'm having the following error in the output of my Glassfish 4.1 server:    WARN: WELD-000335: Conversation context is already active, most   it was not cleaned up properly during previous request   processing: org.apache.catalina.connector.R...
asked by 04.09.2016 / 06:09
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Insert webservice data into sqlite

I have a webservice that returns me the following data CodeDiscipline, Discipline, CodeTurma. Starting from a principle that the teacher can have more than one discipline, for example, Code Discipline: 22, Discipline: Portuguese, CodeTu...
asked by 05.09.2016 / 18:15
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Call Java function (Android) inside a hybrid mobile application with JavaScript

We are building a hybrid web application, which needs to print to a portable printer by bluetooth . But the printer is imported and only comes with a Java SDK, which is not our strong! We needed to print from the JavaScript code, but I'm not...
asked by 31.08.2016 / 22:17