Questions tagged as 'java'

Tagged questions
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Open a folder on your computer with JAVA

In the following code I am creating a class which creates a folder in the computer and also adds a jPanel with different options, what happens is that when you press the START button you should open the folder, but I tried several ways without...
asked by 19.12.2018 / 23:15
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Error calling the attribute "name" in BD and Java web

In web java when I call the procedure list of the bd, I get the name "Juan Luis" (as it was created in the bd) but when I select edit I get only "Juan" drop procedure if exists actu_alumno; delimiter $$ create procedure actu_alumno(in nombre...
asked by 20.12.2018 / 17:43
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Read the calculated data using formula in Excel and pass it to Jtable

I have already solved the export of an Excel sheet to a Jtable in Java. The problem arises in Excel cells that have been calculated using formula. In these cases, the Jtable does not interpret the format and the export is interrupted. Do you kno...
asked by 20.12.2018 / 17:52
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Read Time Out when using FTPClient in Java. Right at the end of the transfer

I hope you can help me. I am trying to save a file on an FTP server that I have in WIndows Server 2012 with the following code, in fact I worked without problems when I had the FTP server in Linux. FTPClient ftpClient = new FTPClient(); ftp...
asked by 20.12.2018 / 18:30
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EOFException Java and two more errors

I explain I am doing a program in java that inserts an Id, surname department and salary by arguments. In a .dat file, but first check that there is no person with the same id, finally read all the "employees" and show them by console. The despa...
asked by 20.12.2018 / 17:50
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What is the solution to all present, past and future NullPointerException errors?

I have my Java program and I get a NullPointerException and I have seen other questions but they are from people with other programs and it does not work for my program and I want to leave here the 2,000 lines of my program so that you solve the...
asked by 08.01.2017 / 18:54
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problems to prevent a good code fix but it gives error

At the time of calling a method, from another class, which prints the class array gives me error called the method this is the method: public static void tecOpciones() { int valores = 0, selec; do { do { sele...
asked by 18.12.2018 / 23:05
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Search between dates (range) JDateChoser java access

Hi, I'm doing a project where I have records with date field and I need to filter by date in JTable to do the iReport report afterwards and I can not do that filter. Use as a database ACCESS , how can I do that filter query? ' private vo...
asked by 18.12.2018 / 15:56
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Paint in Jtable tables

I have a weekly schedule already generated in a JTable table. What I want is that you can either paint in the cells manually with the application running (I have not found anything about it) (and also, call a method behind) or, (as I have done s...
asked by 17.12.2018 / 12:48
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It does not let me change from fragment to webfragment

I have an application which contains a list, a detail of the item in the list and a web of the item in the list. When I click on the first item in the list, it has to take me to the data of that item (detail class of the item) and inside that...
asked by 16.12.2018 / 15:44