Questions tagged as 'java'

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Explorer Java Program

I was commissioned to do an exercise that is as follows: Make a program in Java that simulates a file browser. Once the program has been executed, starting from the project folder, you must allow the user to perform the following actions...
asked by 06.03.2018 / 10:12
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Jasper Report, reports with subreport in java

hi community of programmers I have a concern, I would like to be able to solve it here, I have already done several reports with japer report and java, and they have worked all normal, but now I feel the need to make a report with a subreporte i...
asked by 02.03.2018 / 21:28
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Doubt with arrayList

I have a question with arrayList, in the following case it is a project of an academic center that has the student class and the subject class. I need to register a student in a subject by means of the attribute 'file' of the class 'Student'...
asked by 01.03.2018 / 22:20
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I need to store the same data in a stack and in a vector.

When I send print the vector says: "[I @ 1540e19d" Urgent help please! : ( public static void main(String[] args) { Scanner sc = new Scanner (System.in); int n,x,dato,cp=0,cn=0,guardaDato; System.out.println("=======================...
asked by 28.02.2018 / 00:02
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I need to calculate the highest, the lowest, the average, the sale value and the sale value greater than 100000 but it does not work

package quiz; import java.util.Scanner; public class Ferreteria { public static void main(String[] args) { Ferreteria objFerreteria=new Ferreteria(); objFerreteria.contadorVentas(); } int clientes; double valorProducto; in...
asked by 28.02.2018 / 01:48
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Read file by blocks How to optimize it? see the end of the post

Good morning dear community. I am a platform application development student and I have encountered a problem in class that brings me some headaches, to see if someone can help me or give me a clue. I have the following file (sudokus.txt):...
asked by 28.02.2018 / 02:30
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Error making an INSERT INTO IN JAVA NETBEANS

I have a small problem when performing an INSERT TO A DATABASE THAT BELIEVES IN MY SQL THROUGH SCRIPT IN NETBEANS. MY COLLABORATOR TABLE HAS 31 FIELDS, EH CREATED 31 TextField to receive the information written there, and yet when I click on the...
asked by 28.02.2018 / 07:52
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Update data in pivot table ADF

I have a Pivot Table ADF (work with JDeveloper 12c), where in the columns I have grades and rows, subjects. The idea is to select one of those notes and edit it in the same pivot table. The pivot table is like this: I hope the questions...
asked by 28.02.2018 / 11:59
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java.lang.NumberFormatException: multiple points

I was trying to read some data through a server, at first fine: Datagrama recibido del host: /10.166.122.105 desde el puerto remoto: 37547 x=-0.077811554 y=0.094570965 z=9.7324295 grados=0.0 Datagrama recibido del host: /10.166.122.105 desde e...
asked by 28.02.2018 / 10:54
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Error using TimerTask to disable a BroadcastReceiver

What I'm trying to do is turn off a BroadcastReceiver when X time passes. This I already achieve, and it works. I tried it using a switch and it worked, when it was in on . It was activated and when it was in off no. Initiall...
asked by 27.02.2018 / 01:14