need help java : how to format the output?

[AlexenderReez]

i have done simple java program that should display price for food selected.i wonder,how to format/synchronize the out so that it give price output accurately like


12.45

instead of


12.450000001 //-->i don't want this output...

i google around and i try to change code from


System.out.println("Total Prices need to pay RM= " +overallTotal));

to


System.out.println("Total Prices need to pay RM= "+ String.format("%0.2f",overallTotal));

but it display = --


reez@alexenderreez:~/Desktop/assignment$ java MacDollah
1. Mac Beef = 2.7
2. Mac Fish = 3.5
3. Cheesy Beef Burger = 3.5
4. Mac Chicken = 3.0
5. Mengelembu Fries = 2.0
6. Combo Meal A = 5.0
7. Combo Meal B = 6.5
8. Combo Meal C = 8.0
9. SoftDrink = 2.0
10. Ais CreaM = 1.0
Please enter your number selection(Enter 0 to end selection)
2
RM=3.5
Please enter your number selection(Enter 0 to end selection)
4
RM=3.0
Please enter your number selection(Enter 0 to end selection)
0
Exception in thread "main" java.util.MissingFormatWidthException: 0.2f
at java.util.Formatter$FormatSpecifier.checkNumeric(F ormatter.java:2929)
at java.util.Formatter$FormatSpecifier.checkFloat(For matter.java:2908)
at java.util.Formatter$FormatSpecifier.<init>(Formatter.java:2644)
at java.util.Formatter.parse(Formatter.java:2479)
at java.util.Formatter.format(Formatter.java:2413)
at java.util.Formatter.format(Formatter.java:2366)
at java.lang.String.format(String.java:2770)
at order.displayPrice(order.java:25)
at MacDollah.main(MacDollah.java:16)


which is give error there....nay help...how should i write to format the output..?

[Geekkit]

i have done simple java program that should display price for food selected.i wonder,how to format/synchronize the out so that it give price output

To format a price use the NumberFormat class like this:


// Format
locale = Locale.CANADA;
string = NumberFormat.getCurrencyInstance(locale).format(12 3.45);
// $123.45

If you want quick and dirty (i.e., C-Style) then use the printf statement:


double x = 27.5;
System.out.printf("x = %15.2f", x);

[AlexenderReez]

thanks:KS

[Geekkit]

thanks:KS

Welcome. :)