"Go" Java formatted output printf example

"Go" Java formatted output printf example

Transfer from http://www.cnblogs.com/TankMa/archive/2011/08/20/2146913.html#undefined

import java.util.Date;

/**

* Use printf Output

*/

/** Key Technology points

* Use Java.io.PrintStream's printf method for C-style output

* The first parameter of the printf method is the output format, the second parameter is variable length, indicating the data object to be output

*/

Public class Printf {

Public Static void Main (string[] args) {

/*** Output String ***/

%s represents the output string, which is the replacement of the following string in the schema%s

System. out. printf ("%s", new Integer (1212));

%n indicates line break

System. out. printf ("%s%n", "End Line");

Multiple parameters can also be supported

System. out. printf ("%s =%s%n", "Name", "Zhangsan");

%s exports the string in uppercase

System. out. printf ("%s =%s%n", "Name", "Zhangsan");

When multiple parameters are supported, the variable number can be inserted between%s, 1$ represents the first string, and 3$ represents the 3rd string

System. out. printf ("%1 $ s =%3$s%2$s%n", "Name", "san", "Zhang");

/*** Output Boolean type ***/

System. out. printf ("true =%b; False = ", true);

System. out. printf ("%b%n", false);

/*** Output Integer type ***/

Integer IOBJ = 342;

%d means to format integers as 10-binary integers

System. out. printf ("%d; %d %d%n ", -500, 2343L, IOBJ);

%o to format integers as 8-binary integers

System. out. printf ("%o;%o;%o %n ", -500, 2343L, IOBJ);

%x to format integers as 16 binary integers

System. out. printf ("%x; %x %x%n ", -500, 2343L, IOBJ);

%x to format an integer as a 16-in integer, and the letter becomes uppercase

System. out. printf ("%x; %x; %x%n ", -500, 2343L, IOBJ);

/*** output floating-point type ***/

Double dobj = 45.6d;

%e means to export floating-point numbers by scientific and technical law

System. out. printf ("%e; %e %e%n ", -756.403f, 7464.232641d, dobj);

%e represents the output of floating-point numbers in scientific and technical law, and in uppercase form

System. out. printf ("%E; %E; %e%n ", -756.403f, 7464.232641d, dobj);

%f indicates output floating-point numbers formatted in decimal

System. out. printf ("%f; %f %f%n ", -756.403f, 7464.232641d, dobj);

You can also limit the number of digits after the decimal point

System. out. printf ("%.1f; %.3f; %f%n ", -756.403f, 7464.232641d, dobj);

/*** Output Date Type ***/

%t represents a formatted datetime type,%t is an uppercase form of a time date, and a different output format is represented by a specific letter after%t

Date date = new date ();

long datal = Date.gettime ();

Format Month Day

%t followed by Y to indicate the year of the output date (2-digit year, such as 99)

%t followed by M for the month of the output date, followed by D to indicate the day number of the output date%t

System. out. printf ("%1$TY-%1$TM-%1$TD; %2$ty-%2$tm-%2$td%n ", date, datal);

%t followed by Y to indicate the year of the output date (4-digit year),

%t followed by B for the full name of the month of the output date, followed by a%t with B for the month of the output date

System. out. printf ("%1$TY-%1$TB-%1$TD; %2$ty-%2$tb-%2$td%n ", date, datal);

The following are common combinations of dates

%t followed by D to format the date with "%tm/%td/%ty"

System. out. printf ("%1$td%n", date);

%t followed by F to format the date with "%TY-%TM-%TD"

System. out. printf ("%1$tf%n", date);

/*** Output Time Type ***/

Output Time seconds

%t after the output time with H (24 binary), after%t with I for the time of output (12 binary),

%t is followed by M for the output time of the minute, after%t with s to indicate the output time of the second

System. out. printf ("%1$TH:%1$TM:%1$TS; %2$ti:%2$tm:%2$ts%n ", date, datal);

%t the millisecond in seconds after which the output time is expressed with L

System. out. printf ("%1$th:%1$tm:%1$ts%1$tl%n", date);

%t after p represents the morning or afternoon information of the output time

System. out. printf ("%1$th:%1$tm:%1$ts%1$tl%1$tp%n", date);

The following are common time combinations

After%t, use R to format time with "%th:%tm"

System. out. printf ("%1$tr%n", date);

%t after the "%th:%tm:%ts" format time with T

System. out. printf ("%1$tt%n", date);

After%t, use R to format time with "%ti:%tm:%ts%TP"

System. out. printf ("%1$tr%n", date);

/*** Output Week ***/

After%t, use a to get the full name of the day of the week.

System. out. printf ("%1$tf%1$ta%n", date);

%t to get the abbreviation for the day of the week with a

System. out. printf ("%1$tf%1$ta%n", date);

Complete information for the output time and date

System. out. printf ("%1$tc%n", date);

}

}

/**

In the *printf method, the format "%s" means that the first parameter value of the second variable-length parameter is output as a string;

* format "%n" for newline; format '%s ' means to export the string in uppercase; "n$" between "%s"

* Outputs the nth parameter value of a variable-length parameter. Format "%b" to indicate output of the second variable length parameter as a Boolean value

* The first parameter value.

*/

/**

* format "%d" means output in decimal integer; "%o" The expression is output in eight binary form; %x "indicates a hexadecimal

* OUTPUT; " %x "indicates the output in hexadecimal, and the letters (A, B, C, D, E, F) are capitalized. The format is"%e "table

* Output floating-point numbers in scientific notation; the format "%E" means to output floating-point numbers in scientific notation, and to capitalize E in the format

* "%f" means output in decimal floating-point numbers, and ". N" Between "%f" indicates that the output retains the n digits after the decimal point.

*/

/**

* format "%t" indicates the output time date type. " %t "followed by Y for the two-digit year of the output date (for example, 99), with M

* Indicates the month of the output date, using D to indicate the day of the output date; " %t "followed by Y represents the four-digit year of the output date

* (such as 1999), the full name of the month in which the output date is represented by B, and b for the month of the output date. " %t "followed by D

* Indicates that the date is output in the format "%tm/%td/%ty", and the date in "%TY-%TM-%TD" is expressed in F.

*/

/**

* "%t" after "H" for the time of output (24), with I for the time of output (12), with M for the output time

* points, with S for the output time of the second, with L for the output time of the second of the number of milliseconds, with p for the output time is the morning or

* Afternoon. " %t "then use R to indicate the output time in"%TH:%TM "format, with T for"%th:%tm:%ts "format output

* time, using R to indicate the output time in "%ti:%tm:%ts%TP" format.

*/

/**

* "%t" after "a" to indicate the full name of the output date, a for the output date of the week abbreviation.

*/

"Go" Java formatted output printf example