Questions tagged as 'java'

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how can I pass the iterative shellSort algorithm to recursive ..?

I am trying to transform the following algorithm from iterative to recursive: void shellSort(int a[], int h) { int i; while (h > 0) { for (i = h-1; i<n; i++) { int B = a[i]; int j =...
asked by 16.06.2018 / 06:01
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error when operating array with java

Hellos, ask if I had to open a new post for a new question I have about this code and inform me that if it is the same code, I can edit, tons, now I have a little problem under this part of the code // now we obtain the scalar multiplication dat...
asked by 16.06.2018 / 01:20
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Name of consecutive JButton type objects in Java

Hello and excuse me if the title is not very specific. I have in a JAVA application a total of 197 JButton with names btn1, btn2, btn3, .... btn197 which corresponds to the parking spaces. In the database that I own has the columns...
asked by 16.06.2018 / 00:22
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Call getActionCommand with a KeyEvent

I have a GUI class and another Event Handler class that implements the Listeners. In the GUI I have 2 buttons that listen to the controller class. How do I make the keyPressed method of the management class identify which JButton is being pus...
asked by 16.06.2018 / 04:30
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Get value from a HashMap

Hi, I am doing an exercise in java for classes and I am not able to make the method consult the Department method. In the class where I have the main, I have made a menu where I ask for the number of the department that is in the Employee class....
asked by 17.06.2018 / 22:02
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How to list Json data with Httpurlconnection in Android studio

I have my web service Rest and I need to put the json in my android application, for which I am doing it in ANDROID STUDIO and put it in a recycler view with cardview. { "data": [ { "not_idnot": 1, "not_idadmin": "A0001", "not_autor...
asked by 16.06.2018 / 07:04
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Objects with vector attributes - relationship - Java

I have the Prestamo classes public class Prestamo extends Pago{ private Fecha[] fechasPago; public Prestamo(){} public void setFechasPago(Fecha[] fechasPago){ this.fechasPago=fechasPago; }...
asked by 22.06.2018 / 02:23
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List knots from firebase database

I want to list from the firebase database 2 knots: I have a knot that I call Restaurant and another Categories. In Categories I have two different knots where I put 2 knots children who in turn have children. I want to list in a recycleview...
asked by 15.06.2018 / 22:01
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How to get the current Date in a datetimepicker?

What I want to do is that when entering my page, my two default date fields show the current date, these are my fields <div class="form-group"> <div class="input-group date" id="datetimepicker1"> <input id="fechInicio...
asked by 20.06.2018 / 03:44
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How to set the current date by default in calendar with javascript?

I have these two fields of date type, which I use to establish a period of dates <div class="form-group"> <div class="input-group date" id="datetimepicker1"> <input id="fechInicio" name="fechInicio" class="form-contr...
asked by 18.06.2018 / 00:28