printf to command line summary : printf Method « Development « Java Tutorial

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Java Tutorial » Development » printf Method

6. 14. 3. printf to command line summary


%[argument_index$][flags][width][.precision]conversion

   square brackets is for optional format.

   

   conversion specifying how to display the argument:

     'd': decimal integer 

     'o': octal integer

     'x': hexadecimal integer

     

     'f': decimal notation for float

     'g': scientific notation (with an exponent) for float 

     'a': hexadecimal with an exponent for float



     'c': for a character

     's': for a string.

     'b': for a boolean value, so its output is "true" or "false".

     'h': output the hashcode of the argument in hexadecimal form.

     'n': "%n" has the same effect as "\n".

                                   

      argument_index: "1$" refers to the first argument, 

                      "2$" refers to the second argument, 

                      '<' followed by $ indicate that the argument should be the same as 

                      that of the previous format specification                    

      

      flags: '-' left-justified

             '^' and uppercase

             '+' output a sign for numerical values.

             '0' forces numerical values to be zero-padded.                                   

      

      width: Specifies the field width for outputting the argument and represents the minimum number of 

             characters to be written to the output.

      

      precision: used to restrict the output depending on the conversion. 

                 It specifies the number of digits of precision when 

                 outputting floating-point values.

6. 14. printf Method
	6. 14. 1.	Using Java's printf( ) Method
	6. 14. 2.	Demonstrate printf()
	6. 14. 3.	printf to command line summary
	6. 14. 4.	Formatting Numerical Data:
	6. 14. 5.	Specifying the Width and Precision
	6. 14. 6.	Formatting Characters and Strings
	6. 14. 7.	output a % character
	6. 14. 8.	Formatting Data into a String
	6. 14. 9.	Formatting a string and Ouputing to console
	6. 14. 10.	Formated System.out.printf
	6. 14. 11.	localized day name: %tA/%TA
	6. 14. 12.	localized, abbreviated day: %ta/%Ta
	6. 14. 13.	two-digit century: %tC/%TC
	6. 14. 14.	four digit year: %tY/%TY
	6. 14. 15.	two-digit year: %ty/%Ty
	6. 14. 16.	three-digit day of the year: %tj/%Tj
	6. 14. 17.	two-digit month: %tm/%Tm
	6. 14. 18.	two-digit day of the month: %td/%Td
	6. 14. 19.	a one-or-two-digit day of the month: %te/%Te
	6. 14. 20.	hours and minutes on a 24-hour clock: %tR/%TR
	6. 14. 21.	hours, minutes, and seconds on a 24-hour clock: %tT/%TT
	6. 14. 22.	hours, minutes, and seconds on a 12-hour clock: %tr/%Tr
	6. 14. 23.	month/day/year: %tD/%TD
	6. 14. 24.	ISO 8601 standard date: %tF/%TF
	6. 14. 25.	Unix date format: %tc/%Tc
	6. 14. 26.	Decimal: %f
	6. 14. 27.	Scientific notation: %e (lower case e)
	6. 14. 28.	Scientific notation: %E (upper case E)
	6. 14. 29.	Decimal/Scientific: %g (lower case g)
	6. 14. 30.	Decimal/Scientific: %G (upper case G)
	6. 14. 31.	Lowercase Hexadecimal: %a
	6. 14. 32.	Uppercase Hexadecimal: %A
	6. 14. 33.	Decimal: %d
	6. 14. 34.	Octal: %o
	6. 14. 35.	Lowercase hexadecimal: %x
	6. 14. 36.	Uppercase hexadecimal: %X
	6. 14. 37.	Output URL: %b (lower case b)
	6. 14. 38.	Output URL: %B (upper case B)
	6. 14. 39.	Hashcode: %h (lower case h)
	6. 14. 40.	HASHCODE: %H (upper case H)
	6. 14. 41.	STRING: %S (upper case S)
	6. 14. 42.	string: %s (lower case s)
	6. 14. 43.	Using the integral conversion characters
	6. 14. 44.	Using floating-point conversion characters
	6. 14. 45.	Using character and string conversion characters.
	6. 14. 46.	Conversion characters for date/time compositions
	6. 14. 47.	Conversion characters for date
	6. 14. 48.	Conversion characters for time
	6. 14. 49.	Using the b, B, h, H, % and n conversion characters.
	6. 14. 50.	Right justifying integers in fields: Field Width
	6. 14. 51.	Using precision for floating-point numbers and strings
	6. 14. 52.	Right justifying and left justifying values
	6. 14. 53.	Printing numbers with and without the + flag
	6. 14. 54.	Printing a space before non-negative values
	6. 14. 55.	Using the # flag with conversion characters o and x
	6. 14. 56.	Printing with the 0 (zero) flag fills in leading zeros
	6. 14. 57.	Using the comma (,) flag to display numbers with thousands separator
	6. 14. 58.	Using the ( flag to place parentheses around negative numbers
	6. 14. 59.	Reordering output with argument indices.
	6. 14. 60.	Two digit hour on a 24-hour clock: %tH/%TH
	6. 14. 61.	two digit hour on a 12-hour clock: %tI/%TI
	6. 14. 62.	one-or-two digit hour on a 24-hour clock: %tk/%Tk
	6. 14. 63.	one-or-two digit hour on a 12-hour: %tl/%Tl
	6. 14. 64.	two digit minutes ranging from 00 to 59: %tH / %TH
	6. 14. 65.	two digit seconds ranging from 00 to 60 : %tS/%TS
	6. 14. 66.	milliseconds: %tL/%TL
	6. 14. 67.	nanoseconds: %tN/%TN
	6. 14. 68.	Locale-specific morning/afternoon indicator: %tp/%Tp
	6. 14. 69.	RFC 822 numeric time zone indicator: %tz/%Tz
	6. 14. 70.	Time zone abbreviation: %tZ/%TZ
	6. 14. 71.	seconds since the epoch: %ts/%Ts
	6. 14. 72.	milliseconds since the epoch: %TQ
	6. 14. 73.	localized month name: %tB/%TB
	6. 14. 74.	localized, abbreviated month: %tb/%Tb
	6. 14. 75.	localized, abbreviated month: %th/%Th

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