Retrieving a format string from a Format object

Question

In Java, there is a way to get a format string from a Format object (or any derived classes)

In code:

Format f = new DecimalFormat("$0.00");
System.out.println(???);

Is it possible to use System.out.println (???); printable "$ 0.00".

I looked at Pattern (); but this function is not displayed in the abstract Format class, and the variable I'm working with may be something that extends the format.

Answer 1

The pattern (if one exists at all) depends on the subclass Format. There is no guarantee that I Formateven used a template to format it.

: , , Format, Serializable.

Answer 2

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Answer 3

. Format (SimpleDateFormat, MessageFormat, ChoiceFormat, DecimalFormat); Pattern. , .

Answer 4

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DecimalFormat f = new DecimalFormat("$0.00"); 
System.out.println(f.toPattern());