import java.io.*;

public class DataOutTest {
    public static void main(String[] args) throws IOException {

        // write the data out
        DataOutputStream out = new DataOutputStream(new
                                   FileOutputStream("invoice1.dat"));

        double[] prices = { 19.99, 9.99, 15.99, 3.99, 4.99 };
        int[] units = { 12, 8, 13, 29, 50 };
        String[] descs = { "Java T-shirt",
                           "Java Mug",
                           "Duke Juggling Dolls",
                           "Java Pin",
                           "Java Key Chain" };
        
        for (int i = 0; i < prices.length; i ++) {
            out.writeDouble(prices[i]);
            out.writeChar('\t');
            out.writeInt(units[i]);
            out.writeChar('\t');
            out.writeChars(descs[i]);
            out.writeChar('\n');
        }
        out.close();
    }
}