Questions tagged as 'scanner'

Tagged questions
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Save file data in ArrayList and display it from largest to smallest.

I am working on a program that obtains data from a text file, obtains only the first 100 and has a method that orders from the first to the last or vice versa and another that searches for a specific name in the file.  This is what I have at th...
asked by 04.05.2018 / 22:06
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Why does hasNext () and hasNextLine () say the file is empty if there is content?

This is part of my list (it is contained in a .txt file): Gladiator (The Gladiator) (2000) 8.5 Rate The Dark Knight The Dark Knight (2008) 9 Rate Slumdog Millionaire Slumdog Millionaire (2008) 8 Rate Infiltrators...
asked by 22.11.2018 / 02:23
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Problem Scanner class in Java when entering multiple Strings as variables [duplicate]

I'm doing a little program for something more complex than this one, but the main problem I have is that I need to add at least two names but when I run it skips entering the first name. Better explain me in code, this is a small example of wh...
asked by 01.12.2017 / 00:49
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How to enter arrays by keyboard and how to initialize them in the main? Java Poo

Good I'm doing a program where I must (enter the name and the note of some students) make 2 arrays one of the String type and another of the float type. I have a problem in the main when I want to enter the student data by console. First I put t...
asked by 08.12.2018 / 03:52
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ZXingScannerView Android issues

I have a problem with the scanner on a Huawei Tag-L13 When the app opens and they scan a Qr code it does everything right, that is, it opens the camera, reads the QR and shows its value, however when they give it back and wish to scan again it d...
asked by 12.11.2018 / 21:08
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Register the value of a ZXingsacanner in Firebase

What happens is that I want to insert certain values in my BD Firebase but when I get the value of a barcode scanned by camera, the register button is disabled and it does not let me, but if I add it manually if I can register the product Thi...
asked by 13.08.2018 / 17:49
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Problem with Android Scanner

I have performed many procedures and I have not found the solution for several days with this error. I am making an application in which various products are registered, which I want to take the bar code by means of a scanner with the camera of...
asked by 16.08.2018 / 18:56
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enter data Scanner to constructor

Someone who explains to me please, how can I invoke the other classes using the constructor with the data that I enter by keyboard using Scanner, thanks. CODE: import java.util.*; class Principal{ public static void main(String[] args)...
asked by 15.05.2018 / 02:13
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How to install Aircrack-ng?

What is the command that installs it or how it is done, since in the documentation link Just followed the steps of installing gmake and sqlite3 as indicated but I ran out of instructions.     
asked by 07.05.2018 / 01:49
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Insert reading of a scanner in input type = text?

I am developing a mobile application where the form registers information but I have a scanner field that opens the camera and scans me. The problem is that it does not return the value of the reading, which is the numbering, it does not return...
asked by 15.04.2018 / 21:31