Thread: JOption

Hello everyone good day!!
I just want to ask help from you sir/madam about my java program, by the way my program is like POS, this is made with the use of (import java.util.Scanner
Now i have a problem about converting it to (import javax.swing.*) using JOption or simply converting it to GUI. Can anyone please help me do it? Heres my program:

Import java.util.*;
public class Cart {
 
   //To publicly access the quantity as it updates every time you wish to buy again
   public  static  int 
   	total_quantity=0;
   	//I have declared 4 products here
   	public static String[]
   	products={null,
   	"1.) Quarter-Pounder Burger (Karina) 50.00",
   	"2.) One-Percenter (2-Stacks of Quarter Pounder Patty)99.00",
   	"3.) TOmbstone Piledriver (3 Stacks of Quarter Pounder Patty)150",
   	"4.) God's Last Gift (Tombstone Burger with 100g of Carolina Reaper)200.00"
   	};
   	//Prices in accordance of their elements
   	public static int[]
   	product_price
   		={0,50,99,150,200
   		};
   		//This is the cart for the check-out of all order you hAve
   		public static int[]
   		final_qty=new int[5];
 
   		public static void main (String[] args) {
   			Scanner s= new Scanner(System.in);
   			int choose,quantity;
   			int p1=0;
   			int p2=0;
   			int p3=0;
   			int p4=0;
   			char decision;
 
   			System.out.println ("Welcome to Burger Legends, please choose any of the menu there..");
   			do{
   				for(int i=0; i<
   					products.length;i++)
   					{ 
   						if(products[i] !=null)
 
   				System.out.println (products[i]);		
   			}
   			 System.out.println ("Choose any items:");
   			 choose=s.nextInt();
 
   			 System.out.println ("How many pieces?");
   			 quantity=s.nextInt();
 
   			 switch(choose)
   			 {
   			 	case 1:
   			 		p1 +=quantity;
   			 		final_qty[1]=p1;
   			 		break;
 
   			 		case 2:
   			 		p2 +=quantity;
   			 		final_qty[2]=p2;
   			 		break;	
 
   			 		case 3:
   			 		p3 +=quantity;
   			 		final_qty[3]=p3;
   			 		break;	
 
   			 		case 4:
   			 		p4 +=quantity;
   			 		final_qty[4]=p4;
   			 		break;	
   			 }
   			 System.out.println ("Would you like to order again?Y/N/y/n:");
 
   			 decision=s.next().charAt(0);
   			}while(decision != 'n' &&
   				decision != 'N');
 
   				System.out.println ("==Final cart==");
   				System.out.println ("\t\\item\t\\Qty\t\\Total");
   				int sum=0;
   				for(int i=0; i<final_qty.length; i++)
   				{
   					if(final_qty[i] !=0)
   					{
 
   			System.out.println (products[i]+"\\"+final_qty[i]+"\\"+final_qty[i]*product_price[i]);
 
   			sum=sum+final_qty[i]*product_price[i];
   					}
   			}
   			System.out.println ("Total Purchased items:"+(p1+p2+p3+p4));
   			System.out.println ("Total Purchased: "+sum);
   			int payment=0;
   			do{
   				System.out.println ("Enter Payment:");
   				payment=s.nextInt();
   				}while(sum>payment);
   				System.out.println ("Thank you for buying! here's your change:"+(payment-sum));	
 
 
}
 
 
}

Hope you can help me thank you, God bless !!

Take a look at the tutorial on how to write a Swing GUI: https://docs.oracle.com/javase/tutor...ing/index.html

Using the JOPtionPane class's methods instead of the Scanner class will be much simpler.

Please edit your post and wrap your code with code tags:

[code]
**YOUR CODE GOES HERE**
[/code]

to get highlighting and preserve formatting.

There are lots of formatting problems in the posted code that make it hard to read and understand. For example with do{}while statements,
the do and the while should start in the same column.
The same with for loops: the for { and the ending } should be in the same column.
Statements inside of an if statement should be indented so their nesting level shows the logic.

If you are just learning java, I would recommend trying the JOptionPane first.
There is a long path to learning how to create a Swing GUI.