Questions tagged as 'java'

Tagged questions
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How to deserialize a list with items of type {"key": "value"}?

I need to deserialize a JSON, but I can not map the enumerated object. Follow JSON: { "list": [ { "1": "Bola" }, { "2": "Quadrado" }, { "3": "Retangulo" } ], "code": 0, "success": true }...
asked by 11.08.2016 / 01:08
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SIP Connection - Android Java Softphone

My intention is to create a Softphone, for this I'm consulting the google libraries and doing some testing, but I packed in a part. I do not want to do start-up functions, or multiple screens, or anything complicated. I just want to make a ca...
asked by 10.09.2016 / 01:22
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Convert String from a JTextField to Calendar

How to perform input conversion through Swing's JTextField via JDBC? public class DadosPessoais { private Calendar dataNascimento; public Calendar getDataNascimento() { return dataNascimento; } public void setDataNasc...
asked by 12.06.2016 / 03:30
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Save photo via URL in database

I'm making an application that needs Facebook's login . I was able to get the data all right, but I can not save the profile photo in the database. I was able to display the photo in ImageView , but when saving from the error. Intent...
asked by 06.10.2016 / 21:04
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NullPointerException Java JPA CDI Tomcat

Good afternoon, guys. I'm developing a Java test application with JPA, CDI and Tomcat. I created a basic test class and I'm getting the following error. Erro: Exception in thread "main" java.lang.NullPointerException at br.com.hcancerbarre...
asked by 29.07.2016 / 21:52
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Save tts as audio file

How can I generate an audio file from a TexttoSpeech to share with other services ( sms , whats , messenger ... )? I created this function to share private void shareAudio() { Intent intent = new Intent( Intent.ACTION_SEND )...
asked by 04.10.2016 / 03:04
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Redirecting page jsp using SpringFramework

Hello I have the following problem in doing a page redirect index.jsp to login.jsp page, in tomcat it only appears that this page was not found, ERROR 404. If anyone can help, I am using and studying Spring, maybe something different from the...
asked by 26.04.2016 / 04:26
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How to destroy a session in java?

To invalidate a session, my teacher passed the following code: HttpSession session = request.getSession(false); if (session!=null){ session.invalidate(); } But after logout, when I click Back in the browser, I can retrieve...
asked by 15.04.2016 / 00:12
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Templated Method - Is it possible to implement with composition instead of inheritance?

To create a Thread we can either extend the Thread class and override the run() method, such as having a class that implements the Runnable , implement the run() method and pass the reference of an object of this class that we...
asked by 24.04.2016 / 20:15
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Why does my ActionBar due to an error stay within my StatusBar?

I started a new default project on Android, I did the same thing Of% get over the default menu ActionBar , now, my NavigationDrawer goes inside ActionBar and the font goes black, I did not move in nothing the code is the def...
asked by 28.05.2016 / 18:34