Java: Displaying Array elements from a LinkedList

[davestar_delux]

Hi, just trying to learn Java and do a little project in it and i've come up against a brick wall, wondering if someone here can help me out.

I've managed to create a method to insert an array into a LinkedList.

Now i'm trying to make a second method to write it out to the screen again but i'm having trouble accessing the array elements.

Here is the code:

public class Transaction
{

    List transactions = new LinkedList();

    public boolean setTransaction(String transactionType, Double transactionAmount)
    {
        SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
        NumberFormat numberFormatter;
        numberFormatter = NumberFormat.getCurrencyInstance();
        
        Date now = new Date();
        String nowFormatted = formatter.format(now);
        String transactionAmountString = numberFormatter.format(transactionAmount);

	    String[] transactionArray = new String[3];
	    transactionArray[0] = nowFormatted;
	    transactionArray[1] = transactionType;
	    transactionArray[2] = transactionAmountString;

        transactions.add(0, transactionArray);
        return true;
    }

    public void getTransactions()
    {
        for(int i=0; i<transactions.size(); i++){
           System.out.println(transactions.get(i));
        }
    }
}

This runs okay but the output is rubbish and I expect that but when I try to change this line:

System.out.println(transactions.get(i));

to something like

System.out.println(transactions.get(i).nowFormatted);

it gives the error cannot resolve Symbol.

 

[Una]

Your better off doing it something like this - Couldn't be bothered to add in proper formatting sure you can do that. At least make your linked list type safe. Not to mention there is no method .nowFormatted defined on your object... so thats why your getting the symbol error.

Transaction.java

public class Transaction
{

    private String transactionType;
    private double transactionAmouunt;

    public Transaction(String type, double amount)
    {
        this.transactionType = type;
        this.transactionAmouunt = amount;
    }

    public String toString()
    {
        return "Type: " + this.transactionType + " Amount: " + this.transactionAmouunt + " ";
    }
}

TransactionTest.java

import java.util.LinkedList;

public class TransactionTest
{
    private static LinkedList<Transaction> transactions = new LinkedList<Transaction>();

    public static void main(String[] args)
    {
        for (Transaction t : transactions)
        {
            System.out.println(t);
        }
    }
}