Questions tagged as 'java'

Tagged questions
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Toast else with problems

My toast is being shown even when my else is not called; was to be shown only when the user entered a wrong password or email, but even when equals works, toast appears: protected void onPostExecute(final String result) { supe...
asked by 01.06.2017 / 20:32
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my app stopped working out of nothing is giving an error "unfortunately app has stopped"

M \ app is working fine, so I turned on the pc and went to run it again and is giving this error "unfortunately app has stopped" I do not know what happened I'm going through the logcat here if someone knows what happened . 05-30 01:59:03.429...
asked by 30.05.2017 / 07:01
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Why is castException giving error?

The code below results in the CastException error. How can I fix this? private void popularTabela(){ ClienteDAO clidao = new ClienteDAO(); Cliente clienteFiltro = new Cliente(); Integer codigoPesq = null; Cidade cidadeFiltro...
asked by 30.05.2017 / 05:10
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How to Pass the Image Name Dynamically?

Hello, I'm learning now and I was able to make a Successful Crown or Application application and I decided to create another one based on it. This other application appears from a click of the mainActivity button it calls a second activity that...
asked by 30.05.2017 / 02:44
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Spring data JPA findOne () returns null

I'm developing an application using Spring MVC, with spring data jpa in the persistence layer. When I try to do a search using the method findOne (or findById ) will always return null. I already checked the database and there...
asked by 30.05.2017 / 04:59
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Save current time and end time in sqlite bank

I'm developing a project on home automation and now when I click on the CONNECT button it would perform the following functions: start device, start timer, save current time and send to the database. Clicking the Shut down button would turn o...
asked by 30.05.2017 / 14:51
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Login system in java

Then I made this code but it is not happening, it falls directly on the same one with the correct username and password. I made the changes and instantiated the class where the checkLogin method is, but when I execute and push the data it giv...
asked by 26.05.2017 / 20:05
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Graphics Type

I'd like to know if there is any component or library that generates a similar "graph" with this. I have read the documentation of JFreeChart , and there are some kind of graphics, but nothing close to this. Whatthis"chart" does is mov...
asked by 26.05.2017 / 20:49
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Calculation of similarity between words with Java

For two string A and B, we define that the similarity of these strings is the length of the prefix that is common to both. For example, the similarity of strings abc and abd is 2, while the similarity of strings aaa...
asked by 24.05.2017 / 23:14
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Show message on screen if there is no internet connection [duplicate]

I created an android app that consumes data from a rest webservice made in Php, so far everything works perfectly. What I want now is to display a message on the screen if you do not have Internet access or inform the user to connect to the In...
asked by 02.06.2017 / 21:49