Questions tagged as 'java'

Tagged questions
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Problem with an IF

I am learning to program in Java, and I have a problem, I have to enter 8 salary to a couple of arrangements, one in the morning and one in the afternoon, and ideally, when I already ellene an arrangement, I pass it for the other arrangement, I...
asked by 09.10.2018 / 20:52
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Error when deploying Spring Boot Rest Simple. Java,

I have been doing a simple exercise of a web service implementing Spring Boot. However I have a problem compiling using Spring Tool 3.9.6.RELEASE in Eclipse Photon. I enclose the code, at the end the exception is added. SpringRestMySqlApp...
asked by 09.10.2018 / 03:07
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How can I count the number of characters in the "content" attribute in java?

package Libreria; public class Pagina { //Atributos private int numero; private String contenido; //Constructores public Pagina(){ numero=0; contenido=""; } public Pagina(int numero, String contenid...
asked by 10.10.2018 / 03:53
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Two conditions in c: if

I want to add two conditions to an if in JSTL, but it throws me an error. <c:if test="${ISAJAX == 0 && ${ISDATE == 0}">    Compilation of JSP File '/WEB-INF/pages/index.jsp' failed:       homeafiliado.jsp: 792: 61: Syntax er...
asked by 16.05.2017 / 20:37
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Initialize Array that is private property of one class in another!

I have a project for a structured exercise in three packages: Application (Main) package aplicacion; import mountainbike.MountainBike; public class ProbandoMountainBike { public static void main(String[] args) { MountainBike mb = new...
asked by 09.05.2017 / 15:46
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JAVA How to get a third list based on two lists without a certain length?

In my code, I demonstrate how to start two lists with a number of elements, but what I occupy they are lists that are independent of the length of both. And that I compare the values and if they are equal they are passed to a new list, but if in...
asked by 03.10.2018 / 16:13
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Build JSONArray from SQLite database

I have a method with which I want to put some records of the BD in a JSON array, for this I first created a JSON Object for each field name to have its value, the detail that I have 50 records and it creates me a JSON array with 50...
asked by 28.09.2018 / 21:40
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How to show a report with jasperreport when clicking on a button?

I have the following code in my jsp, and what I want to do is that when I click on the button, it sends me to another page to show the report, what it does is that if it enters my method that I have in the controller but shows nothing or marks e...
asked by 02.10.2018 / 04:08
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Problem to replace one date with another in a text file (with Java)?

I have a text file that comes as a parameter to one of my Java methods. First I go through the text file line by line in search of the Emission Date: If you find it, I extract the date of that line in a variable. As always it is the same, I k...
asked by 16.10.2018 / 13:50
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error with incompatible can not convert to bolean and in operator &&

package mineralogues; public class MatrizMinas { //atributos private int valores[][]; //constructor public MatrizMinas(){ valores = new int [10][10]; limpiarMinas(); } //limpiar la pantalla public...
asked by 24.09.2018 / 03:34