Questions tagged as 'java'

Tagged questions
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ObjectDb - JAVA - Error with Key

I get this error: Failed to commit transaction: Attempt to reuse an existing primary key value (model.Assignatura:4) tell me this part of the code: public void modificar(Assignatura ass) throws GestorException { //TODO codificar...
asked by 07.03.2018 / 18:30
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Why do I get a date-to-string error?

Good day I have a question about why mark error does not let me convert the string data I tried with this: String fecha_termino; Calendar fechaInicialcalendar = Calendar.getInstance(); SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy...
asked by 07.03.2018 / 04:20
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Count Multiple Buttons with setOnClickListener

I have a question about how to correctly count the number of clicks that are made on multiple buttons of my .MainActivity What I want to do is to count the number that they have clicked on the buttons that are shown and that each time they cl...
asked by 16.07.2018 / 13:13
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Access external image RichFaces

I have a giant problem at work, hehe. It turns out that we work with RichFaces, JSP, Java. I must access and show in JSP an image that is hosted in the root of the hard drive, but I can not find the way to place the correct route and it does...
asked by 05.04.2018 / 15:56
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Installing JRE or JDK in Windows does not load file opening dialog [closed]

I comment to see if you can help me that this problem is already driving me crazy. I can not install neither the JRE nor the JDK of java. When I execute them in the JRE , nothing appears to me (but in the task manager ther...
asked by 03.03.2018 / 20:47
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modify behavior of the last thread of a group

I have the following program: public class Corredor extends Thread { Testimoni comandament; static int canal; public Corredor(Testimoni c) { comandament = c; canal = 0; } @Override public void run() {...
asked by 13.03.2018 / 12:28
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Change the array of strings to an int

What I want in this program is that instead of making a comparison with the equals use (=) with an array of booleans. public static void main(String[] args) { Scanner lector = new Scanner(System.in); String[] equipos = new String[] {"...
asked by 01.03.2018 / 10:11
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A date format that enters the DATE data of phpmyadmin

I have a secure table with the following list of variables: int idSeguro; String nif; String nombre; String ape1; String ape2; int edad; int numHijos; LocalDate fechaCreacion; And I want to relate it to this table that I have in phpMyAdmin....
asked by 26.02.2018 / 12:32
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Rename an attribute of another class in java

package Problema; public class ModeloEstudiante { private int id; private String nombre; private int evaluacion; private double notaFisica; private double notaMatematicas; private double notaQuimica; public ModeloEstudiante(int id, String nomb...
asked by 26.02.2018 / 06:21
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API Google Drive Java

I would like to know if a connection to Google Drive can be made with my desktop application, I have a sales program and what I want to do is have a button that, when clicked, download the report of the total sales and that same file go up to go...
asked by 26.02.2018 / 00:03