Questions tagged as 'java'

Tagged questions
2
answers

Save image in variable

I have this code to add an image to JLabel : public void Cargar_Imagen() { File fichero; int resultado; VentanaImg_Contacto vi= new VentanaImg_Contacto(); FileNameExtensionFilter filtro= new FileNameExte...
asked by 10.06.2016 / 16:12
1
answer

Get name of a file

I'm doing a web app with jsp, I try to make a form that includes a photo in this way <form name="AddCat" action="../Insertar" method="post" enctype="multipart/form-data"> This form is sent to a servlet that supports multipart @WebSe...
asked by 10.06.2016 / 15:32
1
answer

Get a scalar in java

How can I read a scalar from java on sql server? This is my query to the database the insert works perfectly but I do not know how to read the second instruction insert into Category values('Recursos Humanos','HR') SELECT @@IDENTITY as inserta...
asked by 10.06.2016 / 21:49
1
answer

The component ID form8: Productprice has already been found in the view

Glassfish generates this error StandardWrapperValve[Faces Servlet]: Servlet.service() for servlet Faces Servlet threw exception java.lang.IllegalStateException: El ID del componente formulario8:precioProducto ya se ha encontrado en la vista. a...
asked by 13.06.2016 / 00:44
1
answer

Call a class from several

I have a class that calls LEEKs.java in that class I read Kh with Kh = Viga.Kh and then in the class (beam) that called LEEKs.java I get the values Ks , Kz , Kx that are " Double " and also...
asked by 31.05.2016 / 14:42
1
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TCP / IP client freezes when sending data to Server

It is an "echo" server where I want that when two clients connect, they send a String to the server, the latter answers and the client prints the read. The fact is that one of them is left unanswered, I use Threads on the server for each clie...
asked by 01.06.2016 / 09:27
2
answers

Perform HTTP Requests over USB and Sockets

I am working on a development which consists of being able to make HTTP requests using the usb cable and the pc as an intermediary, I followed this page which helped me but I'm having a little problem which I can not fix, here's my code:...
asked by 02.06.2016 / 15:50
1
answer

Java: Array is read or miswritten from a file

I would like to solve a problem of getting all the possible combinations for several people to cross a path, so that two nodes can not be visited by several people. The ideal case would be to store the elements in a list but when using recurs...
asked by 05.06.2016 / 11:07
1
answer

Error when using OR in JPQL

I ask for your help to help me with a query I'm doing and return me an error. I have tried it with createNativeQuery and with createQuery , but it is generating error; the idea is that it receives a parameter and that it can do the...
asked by 31.05.2016 / 17:48
3
answers

The calendar component of primefaces does not show the calendar

As the title indicates, I am developing a web application with Primefaces in which I use the calendar component. In most cases the component works correctly, however, in some cases the component does not show the calendar. Instead, it is display...
asked by 31.05.2016 / 07:29