Questions tagged as 'java'

Tagged questions
2
answers

How I generate a .jar in eclipse with all the libraries [closed]

I need to generate a .jar in eclipse but it depends on some libraries and when I export and use it I mentioned that it does not find the library that is needed, someone could help me, in advance thank you very much     
asked by 19.04.2017 / 01:01
1
answer

How to call from a constructor to another Java Constructor

I have these 3 constructors in a java class, as it would be the correct way to make one call the other, that is, call the default, that it calls the next one with fewer parameters and the latter to which it has all the parameters example:...
asked by 24.11.2017 / 02:26
2
answers

java.lang.NoClassDefFoundError

Does anyone know how to solve the exception java.lang.NoClassDefFoundError? I understand that it occurs when you can not find the class in the classpath, or am I wrong? The strange thing is that I found it without problem and from one day to the...
asked by 04.04.2017 / 15:03
3
answers

Day of the week from date in int format

I want to make a function that from three values in int (day month year) returns me that day of the week is, googling I have reached this function but I get an error, it does not hit with the day it is. This is the code: String diaSemana...
asked by 10.04.2017 / 22:25
2
answers

how can I include the framework spring in netbeans

Hello friends, I am new to the development of java programming and they asked me to use the framework spring for java web development but I enter their website and I do not see a download button of the framework or .jrar files nor nothing like t...
asked by 28.01.2017 / 14:33
3
answers

Transform a multidimensional array, in a simple array

I'm trying to transform an array Integer[][] mapArray = new Integer[52][52]; for (int w = 0; w < 52; w++) { for (int x = 0; x < 52; x++) { mapArray[w][x] = -1; } } In a single-dimension array Inte...
asked by 30.01.2017 / 19:47
1
answer

Problem with JRLoader

I am trying to run a report in Jasper Report with the following code: Class.forName("org.postgresql.Driver"); Connection conexion = DriverManager.getConnection("jdbc:postgresql://localhost:5432/reportes", usuario, contraseña; File repor...
asked by 24.01.2017 / 22:57
2
answers

How to copy the contents of one folder to another?

Hello everyone. I have tried to copy the data from one folder to another using the input and output data implementing this method: public boolean creaArchivo1(String ruta, InputStream is) throws IOException { final int C...
asked by 01.02.2017 / 17:54
1
answer

A different MenuContextual for each ImageButton

How can I have a different context menu for different ImageButtons? For example, to be concrete:    Image 1 - Contextual Menu 1       Image 2 - Contextual Menu 2       ... This is what I do to have a contextual menu in an ImageButton:...
asked by 27.01.2017 / 23:58
1
answer

Simply Linked List Java

I am desperate to find help on linked lists in java; I've searched everywhere for examples, videos, I've already read a couple of books and I can not understand how they work. What I do not understand most is WHERE the new elements of the list t...
asked by 30.03.2017 / 22:41