Questions tagged as 'java'

Tagged questions
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Get the time in from an excell worksheet

I'm using the POI api in Java. To get the time in an excel spreadsheet. In the excell spreadsheet the data is as text Image : publicvoidobterHora(){Cellhora=row.getCell(7);System.out.println("hora: "+hora); }    result: Dec 31, 1899...
asked by 05.10.2018 / 15:40
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How to make a grid with squares?

I would like to do something like this here, a Grid based on an array (and based on the value of the array, set a color to the corresponding cell), and I can manipulate it with the mouse.     
asked by 17.09.2017 / 15:39
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I can not "recover" the value of the Realtime Database (Firebase)

I'm trying this, but it always appears that the app has stopped working. public class TesteActivity extends AppCompatActivity { private TextView la; @Override protected void onCreate(Bundle savedInstanceState) { super.onC...
asked by 26.09.2018 / 03:16
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Music Information

I'm making a music player and it was difficult to get information about the songs. I'm using a ContentResolver and a Cursor to do the music searches in the device's memory. The information like name, title, artist and others and I can capture n...
asked by 25.09.2018 / 21:55
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About Activities in Android / Java

Good evening. My doubt is simple. My app has a system in which I open 5 activities to register (first to activity 1, then to 2 and so on. imagine that it is something like a windows installation where there are several windows with "next") > Fr...
asked by 24.09.2018 / 04:04
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Script Excel Google sheet - Count how many cells with certain background color exist

I have this code I found online: /** * @param {range} countRange Range to be evaluated * @param {range} colorRef Cell with background color to be searched for in countRange * @return {number} * @customfunction */ function countColoredCells(co...
asked by 24.09.2018 / 02:48
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404 - Java EE Project Maven with Spring returns 404

I'm having problems with the Spring configuration of my Maven project, in which to test if everything was working, a simple hello world did not work and apparently there are no explicit errors, someone please save me there! web.xml <?xml...
asked by 02.10.2018 / 18:50
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Error in totalizing a list using Hash Map

I sort a list in a certain order, then create a Map to total this list by grouping by a key. What happens is that sometimes the values are ignored generating difference in total. And I can not see where this might be occurring see the code:...
asked by 25.09.2018 / 14:11
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uses or overrides a deprecated API Recompile with -Xlint: deprecation for details

   C: \ Users \ danil \ AndroidStudioProjects \ ApplicationDrive \ app \ src \ main \ java \ danilo \ cursoandroid \ com \ applicationid \ WelcomeActivity.java:   uses or overrides a deprecated API.   Recompile with -Xlint: deprecation for det...
asked by 25.09.2018 / 08:41
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Error creating tables with relationship and JPA

Hello, I'm trying to create two tables with flyway + Spring + SqlServer + JPA, very simple thing even just to pass the time and I'm having an error that I can not understand because if I execute the same direct in Sql it works. I have the follow...
asked by 25.09.2018 / 16:51