Questions tagged as 'java'

Tagged questions
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The path to read this file in Java is correct

The path I put in the FileReader to read the file would be correct, since it does not stop going to the FileNotFoundException with the method in the logical package and the document in Files all within the src. BufferedReader fichero = new Buf...
asked by 30.12.2018 / 22:02
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Open window from a MenuItem in JavaFX

I'm learning to move around in the JavaFX environment and I've already done all the I need windows, but I still can not connect them to each other. That is, for example, from the initial window VentanaMaestra.fxml touch in the menu bar, t...
asked by 30.12.2018 / 16:05
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Postgresql -en Date but the expression is character variable- error inserting?

I want to insert from java in postgresql. By bringing (and casting) a java.util.Date to java.sql.Date , it works fine, but at the time of inserting it, it marks me this:    ERROR: the column "fechab1" is of type date but the expr...
asked by 31.12.2018 / 17:41
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ServerSocket and Socket java

class ClienteFecha { public static void main( String[] args ) { String servidor = "localhost"; int puerto = 13; // puerto de daytime try { // Se abre un socket conectado al servidor y al...
asked by 18.04.2016 / 17:04
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Returns incorrect value JAVA

I mention my doubt, beforehand saying that I am starting with Java and I am practicing with the methods, I come from another language also oriented to objects but also to very low level. My question or mistake is the following, I am, as a hob...
asked by 31.12.2018 / 18:35
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How can I divide elements of an array to distribute it in 4 threads?

Before telling you what I have developed so far, I explain what I intend to do. I am experimenting with threads and create a method to process files (in total there are 3,000). With only one thread the process is a bit slow ... so I decided to t...
asked by 30.12.2018 / 05:13
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App (android) simple, is slower in some devices (newer) than in others (older)

I'm starting to program for android, and I've made a memory game, that of matching cards. The game is going well, there are no code problems, but in the tests that I have done with the devices that I have at home, I see that in a cell phone i...
asked by 29.12.2018 / 08:07
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connectcxion problems with the jdbc

a project of mysql 5.7 was carried out, the update was made to 8.1 but at the time of the update, the jdbc did not work anymore and it continues to mark the same error as this ! [ ] 1     
asked by 27.12.2018 / 19:23
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localhost: 8080 does not work

As you can see, I decided to dispense with the web.xml import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.ServletRegistration; import org.springframework.web.WebApplicationInitializer; import org....
asked by 27.12.2018 / 19:30
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WARN DispatcherServlet.noHandlerFound problems (1120) No mapping found for HTTP request with URI

I am working with a web application that uses Spring , uses among others the following dependencies (libraries) <!-- spring mvc --> <dependency> <groupId>org.springframework</groupId>...
asked by 28.12.2018 / 08:52