Thread: Need help with Currency Symbol format

 
package billing.util;
 
 
import java.math.RoundingMode;
import java.text.NumberFormat;
import java.util.Scanner;
 
 
public class CurrencyFormat {
 
    private static final int USD = 0;
 
    private static final int JPY = 1;
 
    private static final int CNY = 2;
 
    private static final String US_DOLLAR_SYMBOL = "$";
 
    private static final String JP_YEN_SYMBOL = "\\u00A5"; 
 
    private static final String CN_YUAN_SYMBOL = "\\u00A5"; 
 
    // Object fields
 
    private final NumberFormat formatter; // Number formatter wrapped by this class
    private int currencyType; // Currency type code
    private String currencySymbl; //
    private int fractionDigits;
    private int maxIntDigits;
 
    /** Creates a currency object in the default format.
     * 
     * 
     * 
     * 
     */
    public CurrencyFormat(){
        currencyType = USD;
        currencySymbl = US_DOLLAR_SYMBOL;
        fractionDigits = 2;
 
        maxIntDigits = 0;
        formatter = NumberFormat.getInstance();
        formatter.setRoundingMode(RoundingMode.HALF_UP);
        formatter.setMinimumFractionDigits(fractionDigits);
        formatter.setMaximumFractionDigits(fractionDigits);
        if (maxIntDigits > 0) {
            formatter.setMaximumIntegerDigits (maxIntDigits);
        }
 
    }
 
 
    public static CurrencyFormat getInstance(){
 
        return new CurrencyFormat();
    }
 
 
    public String format (double input) {
        //determin integer digits in number
 
    int intDigits = 0;
    if (input>=1) {
    intDigits =1 +(int) Math.log10(input);
}
    //determines spaces for currency symbol alignment
 
    int spaces = maxIntDigits - intDigits;
 
//Use one less alignment space if a zero is front of the decimal place is wanted
 
if (spaces == maxIntDigits ) {
	spaces --;
 
}
 
//format the number portion.
input = (Math.round (input * Math.pow(10,fractionDigits))
        / (Math.pow (10.0, fractionDigits)));
String baseFormat =formatter.format (input);
 
 
//Start buildning the currency format . Start with the currency Symbol, then add alignment spaces.
 
 
StringBuilder finalFormat = new StringBuilder (currencySymbl);
for ( int i =0; i<spaces; i ++) {
	finalFormat.append(" ");
 
}
 
//Check if an additional alignment space is needed for the thousands
//separator.
if(maxIntDigits > 3 && intDigits <4) {
	finalFormat.append(" ");
}
 
//Add the formatted number to the right of the currency symbol and alignment spaces.
finalFormat.append(baseFormat);
 
return finalFormat.toString();
}
 
 
    public void setFractionDigits (int fractionDigits){
        formatter.setMinimumFractionDigits(fractionDigits);
        formatter.setMaximumFractionDigits(fractionDigits);
        this.fractionDigits = fractionDigits;
    }
 
 
    public void setInterDigits (int intergerDigits){
        maxIntDigits = intergerDigits;
        formatter.setMaximumIntegerDigits(maxIntDigits);  
    }
 
    public void setCurrency (int currencyCode){
        if (currencyCode == JPY){
            currencyType = JPY;
        currencySymbl = JP_YEN_SYMBOL;
    } else if (currencyCode == CNY){
        currencyType = CNY;
        currencySymbl = CN_YUAN_SYMBOL;
 
    } else if (currencyCode == USD)
        currencyType = USD;
        currencySymbl = US_DOLLAR_SYMBOL;
 
    }              
 
 
    public static void main (String [] args) {
 
        CurrencyFormat currencyFormatter = new CurrencyFormat();
 
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter currency, interger digits, fraction digits, and input"
                + "number: ");
        String currency = sc.next();
 
        int intergerDigits = sc.nextInt();
        int fractionDigits = sc.nextInt();
        double number = sc.nextDouble();
        switch (currency){
            case "JPY":
                currencyFormatter.setCurrency(JPY);
                break;
 
        case "CNY":
        currencyFormatter.setCurrency (CNY);
        break;
        }
 
        currencyFormatter.setInterDigits(intergerDigits);
        currencyFormatter.setFractionDigits(fractionDigits);
        System.out.println("Test Case result " + currencyFormatter.format(number));
 
 
 
 
 
    }
}

i should be able to use USD, CNY, and JPY. However it seems only the USD ($) will run... doesnt matter which currency symbol the user requests