Questions tagged as 'java'

Tagged questions
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Restore a mysql database in java

I have problems trying to restore a backup of a java database ... I have the code: public boolean importar(String ruta){ boolean bnd=false; String sentencia = rutaMySQL+"mysql -u "+user+" -p"+pass+" "+bd+" < "+ruta; Runtime rt =...
asked by 14.01.2017 / 06:20
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Connection to Twitter

I would like to know what the code fails, it tells me that "Can not instantiate the Twitter type" where I instancio a Twitter object, Work with the twitter4j library. import java.util.List; import twitter4j.*; import twitter4j.Twitter; pub...
asked by 10.01.2017 / 00:13
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How to make a 6 x 6 board using the swing library, in netbeans, and with what elements is the best way to do it?

I have this project for my programming class 1 for which I must play a board game, and I do not know how to make the board, I would like to help me how to do it using the pallete, thank you very much for answering me .     
asked by 27.02.2017 / 03:24
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Code to get xml or Json Java [duplicate]

I'm trying to get the data that comes from these link link link I have tried many methods but in the end I always get an error when going through this line JSONObject jsonObj = new JSONObject(json); OkHttpClient client = n...
asked by 11.01.2017 / 16:11
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Problem when reading objects sent by Java Socket

I have a problem sending an object of one class per socket. I have the class hiloservidor which is responsible for executing threads every time a request arrives. private Socket ss; private int counter; public hiloservidor(Socket i,int...
asked by 11.01.2017 / 03:28
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Problem saving with JPA

I am trying to prove a method that I have created to save in a database using JPA, it is as follows: Through the following class: public class Prueba { UsuarioImpls usuarioIm= new UsuarioImpls(); public void guardaUsuario(){ String...
asked by 06.12.2016 / 17:58
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Avoid cascade erasure JPA

I have the following class: /** To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package modelo; import java.io.Se...
asked by 06.12.2016 / 13:53
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compare two hours in java [duplicate]

I'm trying to compare two hours to charge prices depending on the time (for a parking lot). public static String horaNoche = "19:00:00"; public static String horaDia = "07:00:00"; //Estos dos strings los obtengo...
asked by 30.12.2016 / 20:55
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Treaty attributes table PdfTable Java iText

I have the following JAVA code public class PDF_Clientes_Tabla { //Ruta del archivo dentro del proyecto de Netbeans. public static String archivo = System.getProperty("user.dir")+"/listado_clientes_tabla.pdf"; public static void crearPDF(Arra...
asked by 30.12.2016 / 02:06
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executeUpdate - incompatible types: int can not be converted to java.sql.ResultSet JAVA

I am trying using a JDialog of a high vehicle form to make an insert in a table in the database. Pressing the " Enviar/OK/Insertar " button to add it to the database gives me the following error: Uncompilable source code - incompa...
asked by 28.12.2016 / 14:01