Java Tutorial : if-else Implementation For Simple Cashier Application On NetBeans

Repository

https://github.com/dmlloyd/openjdk

What Will I Learn?

You will learn how to create simple apllication
You will learn how to create cashier application
You will learn about if-else conditional

Requirements

you must know basic of java programming
you must know how to implement if - else conditional
you must know the structure of nested if

Difficulty

Basic

Tutorial Contents

okay on this occasion I will make a simple cashier application with java programming language on netbeans, in this program the key is the implementation of the If-else conditional, the program is very easy to understand because we do not insert many object comparison in it, but if you already understand about this program you can certainly modify this program to be more complete.

okay we just go to the tutorial.
first thing you have to do is create a new class on NetBeans.

You can create on any package.
then type the program below.

import java.util.*;
public class NewClass
{
    public static void main(String args [])
    {
        Scanner barang=new Scanner (System.in);
        
        int amount, unit_price, price, total_price;
        double discount;
        
                System.out.print("\nEnter the amount of goods purchased : ");
                amount=barang.nextInt();
                
                                
                System.out.print("\nEnter Unit Price        : ");
                unit_price=barang.nextInt();
        
                price = amount * unit_price;
                System.out.print("\nTotal price of goods            : "+price);
                
        if (price > 1000000)
        {
            discount = (double) price * 0.1;
            total_price= price-(int)discount;
        }
        
        else if (price>500000 || price >=1000000)
        {   
            discount = (double) price * 0.05;
            total_price= price-(int)discount;
        }
        else
        {
                discount= (double) price * 0;
                total_price= price-(int)discount;   
        }
        
            System.out.print("\n\nDiskon sebesar                : " +discount);
            System.out.print ("\n\nThe price to pay is      Rp " +total_price);     
    }
    
}

I will explain the program we have written above.
we use this class import java.util. *; because we use the input scanner method or input method directly from the NetBeans base window without displaying a new window like input JOptionPane which uses classimport javax.swing. *;.
this is the declaration of the file name public class NewClass we here make the name for the file is NewClass so we must equate with the name of the program.

this is the main function that must exist on any java programming public static void main (String args []).
this is the declaration of input method Scanner Scanner item = new Scanner (System.in);
this is a declaration of some variables that we use, there are types of data integer and double (fractional)

int amount, unit_price, price, total_price;
       double discount;

This works to display the process for the user interface

System.out.print("\nEnter the amount of goods purchased : ");
                amount=barang.nextInt();
                
                                
                System.out.print("\nEnter Unit Price        : ");
                unit_price=barang.nextInt();
        
                price = amount * unit_price;
                System.out.print("\nTotal price of goods     : "+price);

this is the implementation of the if conditional which means if the price exceeds 1000000 then the buyer will get a discount of 10% of the total price.

if (price > 1000000)
        {
            discount = (double) price * 0.1;
            total_price= price-(int)discount;
        }

this is the second condition that is the reverse condition of the first condition.

else if (price>500000 || price >=1000000)
        {   
            discount = (double) price * 0.05;
            total_price= price-(int)discount;
        }

the third condition serves to cut the total price by discount.

else
        {
                discount= (double) price * 0;
                total_price= price-(int)discount;   
        }

and the last one is to print the final result to the screen

System.out.print("\n\nDiskon sebesar                : " +discount);
            System.out.print ("\n\nThe price to pay is      Rp " +total_price);

Okay, I've explained the whole of the program we created, then we will try to run, whether it will be in accordance with the conditions we have set.
click on the program and select run file.

this is the result after we run, it was in accordance with the conditions we have made.

Okay, the tutorial is over, I purposely made a brief and simple to make it easy to understand, and if you already understand you can modify it to your liking, THANK FOR THE ATTENTION ...!

Curriculum

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Proof of Work Done

Thank you for your contribution.
While I liked the content of your contribution, I would still like to extend few advices for your upcoming contributions:

There are parts of the code that have little explanation, try to explain as much as possible.
Put more resources.
Provide better quality, clearer, and more professional screenshots
Improve the structure of the tutorial.

Looking forward to your upcoming tutorials.

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jerryloyal (52) 7 years ago

Good tutorial, very easy to understand

$0.00

portugalcoin (76) 7 years ago

mcfarhat (71) 7 years ago

In addition to @portugalcoin's comment:

You are tackling a very basic aspect of Java, an if-else implementation. What value does this add?
Moreover, you are explaining the code with a different code than the one you had written. Your code: Scanner barang=new Scanner (System.in); Your explanation: Scanner Scanner item = new Scanner (System.in);... I am concerned you might be copying code from elsewhere. Be careful as plagiarism is a serious offense and could lead to being banned from receiving Utopian reviews.