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Thread: JOption

  1. #1
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    Default 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 !!
    Last edited by Ash4k; March 24th, 2019 at 08:21 AM.

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: JOption

    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.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: JOption

    Thank you, its my 1st time here and also to learn java .

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: JOption

    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.
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: JOption

    Thanks

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