Is there a feature that supports using a variable in the flag of javas printf method, for example
printf("%nd", 12);
where n is a variable?
I want to specify spacing outside of the printf method, for example
int n = 5;
System.out.printf("%nd", 12);
Instead of the following
System.out.printf("%5d", 12);
Alternatively, is there any built-in feature similar to that?
You don't need to pass the spacing in as part of the data.
You can just build the format string on the fly in your printf() statement like so:
int n = 5;
System.out.printf("%"+n+"d", 12);
Yes . Exists in java System.out.printf("The date is %d/%d/%d", 1,2,1997);
Use String.format()
Build your format string as required and then pass to String.format(). The use of a format string and argument list is identical to its use in printf()
String myFormat = "...." // build this string with the format you need
String output = String.format( myFormat, ...);
