import java.io.*;
import java.util.*;

class DataStreamTest {
    public static void main(String[] args) {
	    DataOutputStream dos = new DataOutputStream(
                           new FileOutputStream("invoice1.txt"));
	double[] prices = {456.50,609.99};
	int[] prices = {2,3};
	String descs[] = {'shirt','tie'};
	
    for (int i = 0; i < prices.length; i ++) {
    dos.writeDouble(prices[i]);
    dos.writeChar('\t');
    dos.writeInt(units[i]);
    dos.writeChar('\t');
    dos.writeChars(descs[i]);
    dos.writeChar('\n');
	}
dos.close();

DataInputStream dis = new DataInputStream(
                          new FileInputStream("invoice1.txt"));
	double price,total;
	int unit;
	String desc;
	
try {
    while (true) {
        price = dis.readDouble();
        dis.readChar();       // throws out the tab
        unit = dis.readInt();
        dis.readChar();       // throws out the tab
        desc = dis.readLine();
        System.out.println("You've ordered " + unit + " units of " + desc + " at $" + price);
        total = total + unit * price;
    }    
} catch (EOFException e) {
}
System.out.println("For a TOTAL of: $" + total);
dis.close();

						   
}
}