Java Change Rounding

Question

Im working on a cash register type application, i'm running into problems when separating dollars and cents. I can get dollars by its self but not cents. This is where I'm currently at.

change 126.7328 dollars 126 cents 7328

I want cents to just be 73 instead of 7328.

    String changeString = Double.toString(change); 
    String[] parts = changeString.split("\\.");
    String part2 = parts[1]; 
    double cents5 = Double.parseDouble(part2);
    int cents = (int)cents5

Any help would be much appreciated.

You should not be using floating point values for money. Use an integer or long value for cents, and do modulo 100 for change. See this question: http://stackoverflow.com/questions/3730019/why-not-use-double-or-float-to-represent-currency — Diego Basch, Sep 11 '14 at 01:12
Or else use BigDecimal (although beware the descent into madness when attempting comparisons and equals) — stringy05, Sep 11 '14 at 01:14
@JoePhilllips because `.` has a special meaning in *regex*. Note that `split(String)` expects a *regex* as argument. — Christian Tapia, Sep 11 '14 at 01:14
@Christian It's clearly been too long since I've done any Java — Joe Phillips, Sep 11 '14 at 01:17

score 0 · Accepted Answer · answered Sep 11 '14 at 01:11

0

Format your data using a NumberFormat object:

NumberFormat myCurrencyFormat = NumberFormat.currencyInstance();
String moneyString = myCurrencyFormat.format(change);

Or if you don't want to see the money symbol, use a DecimalFormat:

DecimalFormat decimalFormat = new DecimalFormat("0.00");
String moneyString = decimalFormat.format(change);

answered Sep 11 '14 at 01:11

Hovercraft Full Of Eels

283,665
25
256
373

but i just want it to be a 2 digit number like 73 – user3808597 Sep 11 '14 at 01:15
@user3808597 Then do what someone already suggested... tackoverflow.com/questions/3730019/why-not-use-double-or-float-to-represent-currency – Joe Phillips Sep 11 '14 at 01:18

Java Change Rounding

1 Answers1