Programming Tips - How can I format a number with two decimal places?

Date: 2013aug30 Language: Java Q. How can I format a number with two decimal places? (eg dollars and cents) A. For floats:
String twoDecimal(final float f) { return new DecimalFormat("#.##").format(f); }
And for doubles its exactly the same:
String twoDecimal(final double d) { return new DecimalFormat("#.##").format(d); }
Example use:
void exampleUse() { System.out.println("value="+twoDecimal(45.123456)); }