Questions tagged as 'nullpointerexception'

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 / 19:54
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 / 19:54
1
answer

How to send a value from a CustomDialog to an Activity?

In the activity_main.xml - > I have a button, which when pressed - > open a custom list view, where when you press the element 1 - > open a custom alert dialog, - > which has 2 buttons and when pressed the Button A - > it takes to...
asked by 02.04.2018 / 00:09
1
answer

Exception nullpointerexception [duplicated]

Good day to everyone, I ask you for help because I am just starting to program in this wonderful language. I'm looking at the subject of sockets. The application that I am developing is an exercise of a course. It consists of two applications,...
asked by 13.02.2018 / 02:32
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 / 19:54
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 / 19:54
2
answers

Help with Android - Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText ()' on a null object reference [duplicate]

Dear, by pressing the button that should take me to the "Registration" Activity in order to create an account, android I get the following error: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Edita...
asked by 16.12.2017 / 04:19
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 / 19:54
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 / 19:54
0
answers

NullPointerException with Ucanaccess

I have a problem, which is that the following code throws me a NullPointerException in: pstm = connection.prepareStatement("SELECT * FROM usuarios"); I enclose the complete code: package com.gmail.brunodiazmartin5.banco.mysql; imp...
asked by 28.06.2017 / 00:01