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Followings is the use of characters in formatting patterns.
| Sr.No. | Class & Description |
|---|---|
| 1 |
0 To display 0 if less digits are present. |
| 2 |
# To display digit ommitting leading zeroes. |
| 3 |
. Decimal separator. |
| 4 |
, Grouping separator. |
| 5 |
E Mantissa and Exponent separator for exponential formats. |
| 6 |
; Format separator. |
| 7 |
– Negative number prefix. |
| 8 |
% Shows number as percentage after multiplying with 100. |
| 9 |
? Shows number as mille after multiplying with 1000. |
| 10 |
X To mark character as number prefix/suffix. |
| 11 |
” To mark quote around special characters. |
Example
In this example, we”re formatting numbers based on different patterns.
import java.text.DecimalFormat;
public class I18NTester {
public static void main(String[] args) {
String pattern = "###.###";
double number = 123456789.123;
DecimalFormat numberFormat = new DecimalFormat(pattern);
System.out.println(number);
//pattern ###.###
System.out.println(numberFormat.format(number));
//pattern ###.#
numberFormat.applyPattern("###.#");
System.out.println(numberFormat.format(number));
//pattern ###,###.##
numberFormat.applyPattern("###,###.##");
System.out.println(numberFormat.format(number));
number = 9.34;
//pattern 000.###
numberFormat.applyPattern("000.##");
System.out.println(numberFormat.format(number));
}
}
Output
It will print the following result.
1.23456789123E8 123456789.123 123456789.1 123,456,789.12 009.34
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