Security and Cryptography - Java Examples in a Nutshell - page 150

Example 7−3: Portfolio.java (continued)
DateFormat shortdate = DateFormat.getDateInstance(DateFormat.MEDIUM);
DateFormat fulldate = DateFormat.getDateTimeInstance(DateFormat.LONG,
DateFormat.LONG);
// Print some introductory data.
out.println("Portfolio value at " +
fulldate.format(lastQuoteTime) + ":");
out.println("Symbol\tShares\tPurchased\tAt\t" +
"Quote\tChange");
// Display the table using the format() methods of the Format objects.
for(int i = 0; i < positions.length; i++) {
out.print(positions[i].name + "\t");
out.print(number.format(positions[i].shares) + "\t");
out.print(shortdate.format(positions[i].purchased) + "\t");
out.print(price.format(positions[i].bought) + "\t");
out.print(price.format(positions[i].current) + "\t");
double change =
(positions[i].current-positions[i].bought)/positions[i].bought;
out.println(percent.format(change));
out.flush();
}
}
static class EquityPosition {
String name; // Name of the stock.
int shares; // Number of shares held.
Date purchased; // When purchased.
double bought; // Purchase price per share
double current; // Current price per share
EquityPosition(String n, int s, Date when, double then, double now) {
name = n; shares = s; purchased = when;
bought = then; current = now;
}
}
/**
* This is a test program that demonstrates the class
**/
public static void main(String[] args) {
// This is the portfolio to display. Note we use a deprecated
// Date() constructor here for convenience. It represents the year
// offset from 1900, and will cause a warning message when compiling.
EquityPosition[] positions = new EquityPosition[] {
new EquityPosition("XXX", 400, new Date(100,1,3),11.90,13.00),
new EquityPosition("YYY", 1100, new Date(100,2,2),71.09,27.25),
new EquityPosition("ZZZ", 6000, new Date(100,4,17),23.37,89.12)
};
// Create the portfolio from these positions
Portfolio portfolio = new Portfolio(positions, new Date());
// Set the default locale using the language code and country code
// specified on the command line.
if (args.length == 2) Locale.setDefault(new Locale(args[0], args[1]));
// Now print the portfolio
portfolio.print(new PrintWriter(System.out));