Questions tagged as 'java'

Tagged questions
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answers

StatusBar - Change color with scrolling in a CollapsingToolbar

Currently I have an image on a profile screen and StatusBar is "transparent". Running right! Problem: The problem is with the scrolling of the screen, because in this case I have already been able to make the Color of the StatusBar in Prim...
asked by 28.10.2017 / 15:25
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Capture JavaFX TextField Change

Is there an event that captures every change that occurs in a JAvaFX TextField?     
asked by 09.10.2017 / 15:50
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Email notification with springboot

I'm trying to create an email notification when a user fills in a form, but I'm not trying very well:    Mail server connection failed; nested exception is javax.mail.MessagingException: Could not convert socket to TLS; nested exception is: j...
asked by 09.10.2017 / 22:33
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Convert a custom object to JSON in Totalcross

You can serialize a Custom Object to JSON without having to enter field-to-field, such as: JSONObject jsonObject = new JSONObject(); jsonObject.put("id", meuObjeto.id); jsonObject.put("dt_sync", meuObjeto.dtSync); jsonOb...
asked by 05.10.2017 / 20:55
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Error 404 when deploying using beanstalk

When deploying the application, it goes online, but by clicking on the link environmente.mf6j6us2wp.sa-east-1.elasticbeanstalk.com that was generated by beanstalk, of error 404. But if at the end of the /index.xhtml link, open the applicati...
asked by 27.10.2017 / 11:39
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Itext with Firebase on Android

Hello, guys, how are you? There was a doubt here that I would like you to help heal her. You can generate a PDF report with itext that contains Firebase data. Type, register multiple clients during the week on Firebase and at the end of the week...
asked by 27.10.2017 / 15:37
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javax.faces.el.EvaluationException: java.lang.NullPointerException

Galera, you are my last salvation. I get this error javax.faces.el.EvaluationException: java.lang.NullPointerException when I try to register a client. My development experience is small, I'm developing this small system as a college work...
asked by 27.10.2017 / 02:10
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Using Sublime Text with Eclipse

I'm in a new project that uses the Java WEB + Spring in the backend and I just do the front end. I need to keep Eclipse open to run the server. However, I use Sublime Text 2 in html editing because I find it very agile with emmet extensio...
asked by 04.10.2017 / 21:47
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How to calculate mathematical expressions in a string?

I'm making an application handle an expression. How do I calculate the result of an expression? For example: 3(-9)+50/2 . This expression is typed in TextView .     
asked by 19.02.2015 / 23:11
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How to start Arduino serial communication with Raspberry PI 3 [closed]

I'm doing a little project on Arduino and I need to start Serial communication with Raspberry PI 3 without IDE with S.O Raspbian Lite. That is, the Raspbian Lite has no graphical interface to open the IDE and start the communication, I want to d...
asked by 02.10.2017 / 01:48