Java Question - Help!

[Ben Bublil]

Hello guys, just wanted to say it's my first year in Java so I learn the basics at the moment.
So I got this java answer I've written to a question I was given to answer, and I don't know why the output is as it is.
Can someone help?

Here's the code (it would be great if someone would compile it to see the output):

import java.util.*;
class Shop
{
  static Scanner reader=new Scanner(System.in);
   public static void main(String[]args)
   {
     int sumPrice=0, priceBeforeDis, counterItems=0, price, dis=0;
     boolean coupon=false, checkout=false, wantsToBuy=false;
     System.out.println();
     System.out.println(" ~~~ Welcome to the shop! ~~~");
     System.out.println("Would you like to buy something?");
     String answer=reader.next(), answerForAnother;
     String[] yes = {"yes","yeS","yES","YES","YEs","Yes","YeS","yEs"};
     String[] no = {"no","NO","No","nO"};
     for(int i=0 ; i<yes.length ; i++)
     {
       if(answer.equals(yes[i]))
       {
         wantsToBuy=true;
       }
     }
     if(wantsToBuy=true)
     {
       System.out.println("Please enter the price of the first item you want to buy");
       while(checkout=false)
       {
         if(counterItems>0)
         {
           System.out.println("Please enter the price of the next item");
         }
         price=reader.nextInt();
         while(price!=0 || price<0)
         {
           System.out.println("Please enter a vaild price number!");
           price=reader.nextInt();
         }
         sumPrice=sumPrice+price;
         counterItems++;
         System.out.println("Would you like to buy another item?");
         answerForAnother=reader.next();
         for(int i=0 ; i<no.length ; i++)
         {
           if(answerForAnother.equals(no[i]))
           {
             checkout=true;
           }
         }
       }
       priceBeforeDis=sumPrice;
       if(sumPrice>799)
       {
         dis=(sumPrice/800)*50;
         sumPrice=sumPrice-dis;
       }
       if(counterItems>3)
       {
         coupon=true;
       }
       if(dis>0)
       {
         System.out.println("The price for your purchase before a discount is "+priceBeforeDis+", but you got a "+dis+" Dollars discount!");
         System.out.println("Now you need to pay only "+sumPrice+" Dollars for your purchase!");
       }
       else
       {
         System.out.println("The price for your purchase is "+sumPrice+" Dollars.");
       }
       if(coupon=true)
       {
         System.out.println("You also got a 5 Dollars coupon for your next purchase!");
       }
       System.out.println();
       System.out.println("Thank you! Come again!");
     }
     if(wantsToBuy=false)
     {
       System.out.println("Oh well.. so.. goodbye I guess!");
     }
   }
}

(I work in Dr. Java)
Thanks all!

[jashburn]

Please wrap your code with [code] tags so that it is easier to read, e.g.,
[code]
// your code here
[/code]

It preserves formatting and provides syntax highlighting, e.g.,

// your code here

Please also try to describe the problem you're facing. State the expected output, and the actual output from running the code.

Just from a quick visual inspection of your code, the most obvious error is the use of the assignment operator (=) when you should be using the equality operator (==). See Operators (The Java™ Tutorials > Learning the Java Language > Language Basics). The errors are at:

...
		if (wantsToBuy = true) {
			...
			while (checkout = false) {
			...
			if (coupon = true) {
		...
		if (wantsToBuy = false) {

[Ben Bublil]

Just from a quick visual inspection of your code, the most obvious error is the use of the assignment operator (=) when you should be using the equality operator (==). See Operators (The Java™ Tutorials > Learning the Java Language > Language Basics). The errors are at:

...
		if (wantsToBuy = true) {
			...
			while (checkout = false) {
			...
			if (coupon = true) {
		...
		if (wantsToBuy = false) {

I CANT BELIEVE IT! SOOOOO STUPID MISTAKE! NOW EVERYTHING WORKS PERFECTLY!!! LOL
Thank you very much! :D