Forcing two decimal places (IE adding 0s where there are none)

[Zoralink23]

I've been working on an assignment and have it 99% of the way complete, but I need to format my final results (Money) into always have two decimal places, subsequently needing to add a 0. I've forced it to round always, but cannot for the life of me figure out how to make it always add a 0. Any help?

Code so far is here: (Sorry for it being a bit clustered!)

import java.text.DecimalFormat;
import java.util.Scanner;

public class JavaJoe {
	/**A program to calculate the total cost of an order of bags of coffee beans.
	 * @author Anonymous
	 * @since 9/8/12
	 */
	private static Scanner keyboard;

	public static void main(String[] args) {
	DecimalFormat f = new DecimalFormat("############.##");
	
	keyboard = new Scanner(System.in);
	System.out.println("How many bags would you like to purchase?");
	String bagsS = keyboard.nextLine();
	int bags = Integer.parseInt(bagsS);
	//System.out.println(bags);
	double discount = 0;
	
	if (bags >= 300){
			discount = (double) .3;}
	else if (bags >= 250){
		discount = (double) .25;}
	else if (bags >= 200){
		discount = (double) .20;}
	else if (bags >= 100){
		discount = (double) .15;}
	else if (bags >= 50){
		discount = (double) .1;}
	else if (bags >= 25){
		discount = (double) .05;}
	//Figuring out the bag price and the discount);
	double bagPrice = (bags*5.50);
	double bagDiscount = (bagPrice * discount);
	
	//Finding the number of boxes
	int largeBoxes = (bags / 20);
	//System.out.print(largeBoxes);
	int moreBoxes = (bags % 20);
	int mediumBoxes = (moreBoxes / 10);
	//System.out.print(mediumBoxes);
	int smallBoxesP1 = (moreBoxes % 10);
	int smallBoxes = 0;
	if (smallBoxesP1 > 5){
		int smallBoxesP2 = 2;
		smallBoxes = smallBoxesP2;}
	else if (smallBoxesP1 == 0){
		int smallBoxesP2 = 0;
		smallBoxes = smallBoxesP2;}
	else if (smallBoxesP1 >0){
		int smallBoxesP2 = 1;
		smallBoxes = smallBoxesP2;}
	double lBoxCost = (largeBoxes * 2.00);
	double mBoxCost = (mediumBoxes * 1.00);
	double sBoxCost = (smallBoxes * 0.50);
	
	double totalCostUF = (bagPrice + sBoxCost + mBoxCost + lBoxCost - bagDiscount);

	//Printing out all the results
	System.out.println("Bags ordered: " + bags + "   Bags' cost: $" + f.format(bagPrice));
	System.out.println("Bag discount: " + (discount*100)+"%" + " which comes out to $" + (f.format(bagDiscount))+ ".");
	System.out.println("");
	System.out.println("Boxes needed: ");
	System.out.println("Large boxes used: " + largeBoxes + " costing $" + f.format(lBoxCost)+ ".");
	System.out.println("Medium boxes used: " + mediumBoxes + " costing $" + f.format(mBoxCost)+ ".");
	System.out.println("Small boxes used: " + smallBoxes + " costing $" + f.format(sBoxCost)+ ".");
	System.out.println("");
	System.out.println("The total cost is: " + f.format(totalCostUF));
	
	}
	}

[pbrockway2]

DecimalFormat f = new DecimalFormat("############.##");

Read the DecimalFormat API docs to see what options you have for displaying digits. At the moment you are using # which means "Digit, zero shows as absent", and you don't want it to be absent.

[Zoralink23]

Read the DecimalFormat API docs to see what options you have for displaying digits. At the moment you are using # which means "Digit, zero shows as absent", and you don't want it to be absent.

Well now I feel dumb. I had glanced over that quickly but somehow managed to miss that entire section. Sorry for wasting your time with such a simple answer and thanks for the help!

[pbrockway2]

Glad you've got it sorted out. I hoped quoting "shows as absent" would be enough to point you to the right part of the docs.

It's a bl00dy silly wording, though. I mean, a thing shows, or it is absent.