[galva]

/*Hello. I dont't know what wrong i do. It seems that i can't show the transactions history.
It works well until the 10 transactions. But then the program can't rewrite the first array
so only ten latest transactions should be shown. The problem is that i am stuck and i don't know how to go further. Plese, could someone help me...*/

import java.util.Scanner;


public class BankoMat 
{
	
    public static void main(String[] args)
    {
         Scanner keyboard = new Scanner(System.in);
         
         int amount = 0;
         int choice = 0;
         int [] transactions = new int[10];
         int sum;
         int balance = 0;
         
         while (choice != 4)
         {
         	choice = menu();
         	switch(choice)
         	{
         		case 1:
         				System.out.print("How much will you deposit? :");
         				sum = keyboard.nextInt();
         					if(sum == 0)
         					{
         						System.out.print("Wrong amount");
         						System.out.println();
         						System.out.println();
         					}
         						else
         						{
         							amount = (int) + sum;
         							makeTransactions(amount, transactions);
         						}
         						break;
         		
         		case 2:
         				System.out.print("How much do you want to withdrawl?: ");
         				sum = keyboard.nextInt();
         					if(sum == 0)
         					{
         						System.out.print("Wrong amount");
         						System.out.println();
         						System.out.println();
         					}
         						else
         						{
         							amount = (int) - sum;
         							makeTransactions(amount, transactions);
         						}
         						break;
         		
         		case 3:
         				showTransactions(transactions, balance);
         				break;
         				
         		case 4:
         				System.out.println("End program");
         				break;
         	}	
         	
         }
    }
    
    
    	public static int menu()
    	{
    		Scanner keyboard = new Scanner(System.in);
    		int choice = 0;
    		
    		System.out.println("Simple ATM ");
    		System.out.println();
    		System.out.println("1. Deposit ");
    		System.out.println("2. Withdrawl ");
    		System.out.println("3. Balance ");
    		System.out.println("4. End ");
    		System.out.println();
    		System.out.println("Your choice: ");
    		
    		choice = keyboard.nextInt();
    		return choice;
    	}
    	
		public static void showTransactions(int [] transactions, int balance)
		{
			System.out.println();
			System.out.println("10 last transactions:");
			System.out.println();
			
				for(int i = 0; i < transactions.length-1; i++)
				{
					if(transactions[i] == 0)
					{
						System.out.print("");
					}
					
						else
						{
							System.out.print(transactions[i] + "\n");
							balance = balance + transactions[i];
						
						}
			
				}
			System.out.println();
			System.out.println("Balance: " + balance + " kr" + "\n" );
			System.out.println();		

		}
		
		public static void makeTransactions(int amount, int [] transactions)
		{
			int position = findNr(transactions);
			if(position == -1)
			{
				moveTrans(transactions);
					position = findNr(transactions);
					transactions[position] = amount;
			}
			else
			{
				transactions[position] = amount;
			}	
				
		}
		
		public static int findNr(int [] transactions)
		{
			int position = -1;
			
			for(int i = 0; i < transactions.length-1; i++)
			{
				if(transactions[i] == 0)
				{
					position = i;
					break;
				}	
			}
			return position;
		}
		
		public static void moveTrans(int [] transactions)
		{
			for(int i = 0; i < transactions.length-1; i++)
				
				transactions[0] = transactions[i + 1] ;
				
		}
		

}