Questions tagged as 'java'

Tagged questions
1
answer

Does a user need to install mongodb for a java program using mongodb?

The point is that I am developing a program that uses mongodb locally as a database. And what I need to know is if the person who is going to use my program will need to install mongodb on their computer or if on the contrary the mongo...
asked by 27.06.2017 / 11:04
2
answers

Error capturing value of a text file in java

Good I have an error when printing the results of a text file I separated them with a split and I create a String[] columns and with a String dato1 = String.valueOf(columns[0]); I assigned the value but when printing this...
asked by 26.06.2017 / 13:16
2
answers

Print array in Java

How to print an array in Java correctly? Someone who can help me with this doubt. My code: package Arreglos; /** * * @author Jhon Carlos */ public class Arreglo { public void array(){ int caja[] = new int[3]; caj...
asked by 15.05.2018 / 20:06
1
answer

Problem with Java and NetBeans

I have a MacBook Pro. The case that I installed NetBeans latest version and Java JDK, finally I installed the necessary tools. The problem is that, when I compile, I never open the terminal or the project ... if I make a print "hello" shows i...
asked by 02.05.2018 / 14:45
1
answer

Error connect Mysql with SpringBoot

I am trying to access data from the Mysql Database with SpringBoot: But I get an error, I've never accessed, so I'm totally new, I'm following tutorials (5-6), none has worked. The idea is to put an address in the browser and return the lis...
asked by 29.06.2018 / 08:37
2
answers

How to search an arraylist with iterator and modify an object

The doubt I have is that I create a list of objects and then I want to use the move method to modify a ship that is in the arraylist and it throws me an error in the if it compares inside the while public class FlotaEstelar implements InterFlo...
asked by 22.05.2018 / 19:20
1
answer

Help with JPQL to make a kind of filter with LIKE JAVA

I have a problem. I want to make a JPQL , and make a kind of filter that lists me the type of merchandise that have similarity with the name specified by the user. @Override public List<TblStock> findByName(String nombre) { Typ...
asked by 13.07.2018 / 22:47
2
answers

Run .class from console

I'm trying to run a .class from the windows console, the folder structure where I have the classes is the following: C: \Programa \com \index Clase.class The Class class: public class Clase {...
asked by 15.07.2018 / 09:19
1
answer

What is the use of & gt and the & lt in a native query?

I have the following native query but I do not know what it means or what it does & gt, & lt <query> SELECT ID, ID_BASE, NOMBRE, RFC, NOMBRE_CLAVE, FEC_REGISTRO, FECH_PRINCIPAL FROM FACTURA F WHERE F.ID_BASE=?1 AND F.FEC_RE...
asked by 12.07.2018 / 03:35
1
answer

The execution of the program does not enter the foreach

Good I am learning to use the foreach loop in java but I do not get my program inside, I hope you can give me some clue, thanks. import java.util.ArrayList;import java.util.Scanner; public class Taller { private ArrayList<Vehiculo> list...
asked by 18.04.2018 / 19:35