Questions tagged as 'java'

Tagged questions
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How do I search for the value of a HashMap element?

I have a very strange question, I have a HashMap that has this two values ids("pergunta","IdP"); The pergunta is a String and IdP is an Int I now to get the value of the IdP I have to do int a = ids.get("...
asked by 12.05.2015 / 16:00
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How do I run a command on Android by touching the screen or swiping my finger on the screen?

How to run a command on Android by tapping the screen or swiping the finger if someone can help me     
asked by 12.05.2015 / 21:56
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Error in NamedQuery

Good evening guys, I'm trying to create a namedquery with a query in the database. Following: @NamedQuery(name="ListagemProdutosMesa",query="select Produto p FROM Produto p, Pedido pe, Conta c, Pedido_produto pp where pe.id = pp.pedido...
asked by 13.05.2015 / 03:58
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Why can not I load static data in JSF dataTable?

This is my class: package com.algaworks.pedidovenda.controller; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import javax.faces.bean.ManagedBean; import javax.faces.bean.ViewScoped; @ManagedBean @ViewScope...
asked by 11.05.2015 / 17:56
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Why does not Tree come with a value, but with the name of the object in memory?

Error image Managed Bean package com.algaworks.erp.controller; import java.io.Serializable; import java.util.List; import javax.faces.view.ViewScoped; import javax.inject.Inject; import javax.inject.Named; import org.primefaces.model.D...
asked by 06.04.2015 / 15:55
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Close activity after result

I'm trying to implement a tutorial using ZXing to read QRCode . In the tutorial that was accompanying it uses the Eclipse and places the libs of ZXing all "by hand" by importing. I'm using Android Studio and I used Gradle to...
asked by 12.04.2015 / 22:22
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Button does not appear in window

My button called btnLimpar does not appear. This is the code: import javax.swing.*; import java.awt.*; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; public class Frame extends JFrame { private JButton btnEnviar...
asked by 24.03.2015 / 21:12
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is there any software that analyzes the complexity of an algorithm?

Is there any software that performs the complexity analysis of an algorithm? if so, I would like to know which     
asked by 24.03.2015 / 15:13
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Add Maven to a Web Application Project

Good morning, I'm using a Web Application Project, so I can use Google App Engine. I would like to be able to download .jar and its dependencies using Maven, does anyone know how to add Maven to my Web Application Project?     
asked by 13.03.2015 / 13:24
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Error import import br.gov.frameworkdemoiselle.security.User

Error importing interface User : import br.gov.frameworkdemoiselle.security.User; demoiselle version used: 2.5.0-RC1 According to GrepCode, in version 2.5.0-BETA2, this interface existed ( link ), but from 2.5.0-BETA3 onwards it di...
asked by 24.04.2015 / 16:30