Questions tagged as 'java'

Tagged questions
6
answers

What is the solution to all present, past and future NullPointerException errors?

I have my Java program and I get a NullPointerException and I have seen other questions but they are from people with other programs and it does not work for my program and I want to leave here the 2,000 lines of my program so that you solve the...
asked by 08.01.2017 / 18:54
0
answers

sign pyramid with android threads

They ask me to build a pyramid with the sign '%' with threads, as requests I am asked to enter the number of signs to show and it should appear in this way consecutively: a. You must request how many lines the pyramid wants. b. When you...
asked by 14.07.2018 / 21:28
1
answer

how to get x and cursor coordinates within a textArea javafx

I have a TextArea in javafx but do I need to get the position x, y or x coordinates, and the TextArea courses as I get them?     
asked by 14.07.2018 / 21:03
0
answers

Error - clean and build - not suitable builder found and can not find symbol

I have problems when compiling a program When doing clean and build in netbeans, I get the following error:    error: not suitable constructor found for User (String, String, Boolean)                       adminList.add (new User (mail,...
asked by 11.07.2018 / 04:09
1
answer

Error compiling a list in java

It's my first time at Stackoverflow and I hope you can help me. I'm in Java courses and we're in the list creation part, I have this class (List.java) which contains the following: public class Lista{ Node inicio; int tamanio=0; /** se...
asked by 16.07.2018 / 00:01
0
answers

Extract text from an html cell from Java WebView

Cordial Greeting I am using the WEBVIEW in Java to show a web page x which contains a table with data, I try to extreate said data and I have not succeeded using the following libraries. import org.w3c.dom.html.HTMLTableElement import org.w...
asked by 15.07.2018 / 23:32
0
answers

nfc reader with java

Hello colleagues I have a question, I'm doing a project with NFC usb but I have to do it with java and I can not find an example or a library that is suitable for IOS operating system.     
asked by 16.07.2018 / 00:40
0
answers

Entity Embedded In Morphia

I would like to know if there is a way to make an entity "@Entity" and at the same time to embed it "@Embebbed" in morphia. Possible code attachment @Embedded @Entity public class Perfil { @Id private ObjectId id; but when doing...
asked by 10.07.2018 / 14:03
0
answers

Hibernate Mapping Error

I have the following Hibernate xml file: <hibernate-configuration> <session-factory> <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property> <property name="hibernate.connectio...
asked by 10.07.2018 / 14:10
0
answers

How to give AUTO-HOME permission in API 23 or higher?

I have a problem, I am working on an alarm application and it works perfectly in the background, but when I restart the phone the service does not start, I must give the permission to start as the applications have of Whatsapp and messenger...
asked by 09.07.2018 / 11:23