Question

can anyone suggest me a program that can be done in bluej using scanner classes
example: aadhar registration, hotel management, car customization
(first correct answer will be marked as brainliest)

Answer 1



I have written few posts in the past onAndroid Barcode scanner and Android QRcode scanner and received a lot of questions from readers about how to use the code in a complete application. So, I have decided to make an end to end application using QRcode scanner.

Before I start, you should know that making a complete application require 40% planning and 60% coding. Let’s start with the planning phase, those who are only interested in code can skip this section.

Planning Section:

In this section we will try to decide:

what we are makingwhat tasks can be done with our applicationhow will the user interact with this application

What are we making (Idea behind the app):

My purpose is to create something which is useful and everyone can try it, so I decided to make Aadhaar Card Scanner. Well I know not all of my readers know what Aadhar Card is, so here is a brief introduction.

Aadhaar is a 12 digit individual identification number issued by the Unique Identification Authority of India on behalf of the Government of India. This number will serve as a proof of identity and address, anywhere in India. For more information you can further read on  UIDAI Site.

Aadhaar card is the printed version of this information on a paper card. Almost everyone in India has Aadhaar card so this app is useful for everyone in India.

To make Aadhaar card machine readable it has a QRcode which contains card holder’s information. Here is a sample image.



What Tasks can be done with our Aadhaar card scanner (app features):

Below are all the tasks our users can perform with this app:

User can scan Aadhar card and view the information in the app.User can save the information in the appUser can view the saved Aadhar Card informationUser can delete the saved Aadhar card information

 

How will user interact with the app (app screens and user experience):

Now that we know all the features of our app, we need to decide the user journey, which means how user will interact with our app and what all screens he will go through. Following is a basic list:

Home Screen : This is the main screen our user will see when he launch the app. This screen will have two “call to actions” (buttons). One to start a new scan (Scan new Aadhaar Card) and second to view saved Aadhaar cardsScan Card Screen : This screen will come when user will click/touch on “Scan new Aadhaar Card” button. This will let the user scan QRcode of Aadhaar card.Scanned Aadhaar Card data : This screen will come when a successful scans is done. This screen will show the data scanned from QRcode. User can save the scanned data or cancel and start a new scan.Saved Aadharr Card : This screen will come when user clicks/touch on “View Saved Aadhar Card” button from home screen. This screen will list all the saved Aadhar Cards. User can delete the saved Aadhar Cards from here.

Below is a simple flow diagram to understand user journey on our application.

 



After all the decision making, now we have a clear picture of what we are making and what things will it do. This will decide the scope of our development/coding