CODEWITHSUNDEEP
javadecimalformat
h3g0r_
h3g0r_

Reputation: 219

Creating a decimal number with no decimal separator

I am trying to receive an int, which is always a number with 2 decimals. Ex:

So I'm trying to avoid using String operators and use the DecimalFormat with the pattern 0,00 and German locale.

But when I get 10004, the output that I obtain is 1.00.04

This is my code:

public static String formatDecimal(double number) {
    //String pattern  = "#,00";
    String pattern  = "0,00";
    DecimalFormat fN = (DecimalFormat) NumberFormat.getNumberInstance(Locale.GERMAN);
    fN.applyPattern(pattern); 

    return fN.format(number)
}

Upvotes: 1

Views: 2112

Answers (2)

Zilvinas
Zilvinas

Reputation: 5578

Why would you use your own pattern? Java default implementation has pretty good patterns in most of locales. At least by looking Oracle's docs it looks that it should do what you need to:

Locale                  Formatted Numbers
German (Germany)        123.456,789
German (Switzerland)    123'456.789
English (United States) 123,456.789

So what you have to do ( besides dividing a number by 100 ) is set minimum fraction digits to "2":

public static String formatDecimal(double number) {
    NumberFormat german = NumberFormat.getNumberInstance(Locale.GERMAN);
    german.setMinimumFractionDigits(2);
    return german.format(number / 100);
}

Edited: prints numbers as expected:

0,00
0,01
0,02
0,09
0,10
0,11
0,99
1,00
1,01
9,99
10,00
10,01
99,99
100,00
100,01
999,99
1.000,00
1.000,01
9.999,99
10.000,00
10.000,01
99.999,99
100.000,00
100.000,01
999.999,99
1.000.000,00
1.000.000,01

Upvotes: 2

Jean Logeart
Jean Logeart

Reputation: 53819

Try:

public static String formatDecimal(double number) {
    DecimalFormatSymbols dfs = DecimalFormatSymbols.getInstance(Locale.GERMANY);
    dfs.setGroupingSeparator('.');
    return new DecimalFormat("0,00", dfs).format(number / 100);
}

formatDecimal(1000);   // 10,00
formatDecimal(100);    // 1,00
formatDecimal(0);      // 0,00
formatDecimal(100099); // 1.000,99

Upvotes: 2

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