java %tb_Java求解，下面语句中的2$tB表示什么意思？

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对日期32313133353236313431303231363533e58685e5aeb931333361313964类型

This conversion may be applied to long, Long, Calendar, and Date.

't'

'\u0074'

Prefix for date and time conversion characters.

'T'

'\u0054'

The upper-case variant of 't'.

The following date and time conversion character suffixes are defined

for the 't' and 'T' conversions. The types are similar to

but not completely identical to those defined by GNU date and

POSIX strftime(3c). Additional conversion types are provided to

access Java-specific functionality (e.g. 'L' for milliseconds

within the second).

The following conversion characters are used for formatting times:

'H'

'\u0048'

Hour of the day for the 24-hour clock, formatted as two digits with

a leading zero as necessary i.e. 00 - 23. 00

corresponds to midnight.

'I'

'\u0049'

Hour for the 12-hour clock, formatted as two digits with a leading

zero as necessary, i.e. 01 - 12. 01 corresponds to

one o'clock (either morning or afternoon).

'k'

'\u006b'

Hour of the day for the 24-hour clock, i.e. 0 - 23.

0 corresponds to midnight.

'l'

'\u006c'

Hour for the 12-hour clock, i.e. 1 - 12. 1

corresponds to one o'clock (either morning or afternoon).

'M'

'\u004d'

Minute within the hour formatted as two digits with a leading zero

as necessary, i.e. 00 - 59.

'S'

'\u0053'

Seconds within the minute, formatted as two digits with a leading

zero as necessary, i.e. 00 - 60 ("60" is a special

value required to support leap seconds).

'L'

'\u004c'

Millisecond within the second formatted as three digits with

leading zeros as necessary, i.e. 000 - 999.

'N'

'\u004e'

Nanosecond within the second, formatted as nine digits with leading

zeros as necessary, i.e. 000000000 - 999999999. The precision

of this value is limited by the resolution of the underlying operating

system or hardware.

'p'

'\u0070'

Locale-specific morning or afternoon marker

in lower case, e.g."am" or "pm". Use of the

conversion prefix 'T' forces this output to upper case. (Note

that 'p' produces lower-case output. This is different from

GNU date and POSIX strftime(3c) which produce

upper-case output.)

'z'

'\u007a'

RFC 822

style numeric time zone offset from GMT, e.g. -0800. This

value will be adjusted as necessary for Daylight Saving Time. For

long, Long, and Date the time zone used is

the default time zone for this

instance of the Java virtual machine.

'Z'

'\u005a'

A string representing the abbreviation for the time zone. This

value will be adjusted as necessary for Daylight Saving Time. For

long, Long, and Date the time zone used is

the default time zone for this

instance of the Java virtual machine. The Formatter's locale will

supersede the locale of the argument (if any).

's'

'\u0073'

Seconds since the beginning of the epoch starting at 1 January 1970

00:00:00 UTC, i.e. Long.MIN_VALUE/1000 to

Long.MAX_VALUE/1000.

'Q'

'\u004f'

Milliseconds since the beginning of the epoch starting at 1 January

1970 00:00:00 UTC, i.e. Long.MIN_VALUE to

Long.MAX_VALUE. The precision of this value is limited by

the resolution of the underlying operating system or hardware.

The following conversion characters are used for formatting dates:

'B'

'\u0042'

Locale-specific full month name, e.g. "January", "February".

'b'

'\u0062'

Locale-specific abbreviated month name,

e.g. "Jan", "Feb".

'h'

'\u0068'

Same as 'b'.

'A'

'\u0041'

Locale-specific full name of the day of the week,

e.g. "Sunday", "Monday"

'a'

'\u0061'

Locale-specific short name of the day of the week,

e.g. "Sun", "Mon"

'C'

'\u0043'

Four-digit year divided by 100, formatted as two digits

with leading zero as necessary, i.e. 00 - 99

'Y'

'\u0059' Year, formatted to at least

four digits with leading zeros as necessary, e.g. 0092 equals

92 CE for the Gregorian calendar.

'y'

'\u0079'

Last two digits of the year, formatted with leading zeros as

necessary, i.e. 00 - 99.

'j'

'\u006a'

Day of year, formatted as three digits with leading zeros as

necessary, e.g. 001 - 366 for the Gregorian calendar.

001 corresponds to the first day of the year.

'm'

'\u006d'

Month, formatted as two digits with leading zeros as necessary,

i.e. 01 - 13, where "01" is the first month of the

year and ("13" is a special value required to support lunar

calendars).

'd'

'\u0064'

Day of month, formatted as two digits with leading zeros as

necessary, i.e. 01 - 31, where "01" is the first day

of the month.

'e'

'\u0065'

Day of month, formatted as two digits, i.e. 1 - 31 where

"1" is the first day of the month.

The following conversion characters are used for formatting common

date/time compositions.

'R'

'\u0052'

Time formatted for the 24-hour clock as "%tH:%tM"

'T'

'\u0054'

Time formatted for the 24-hour clock as "%tH:%tM:%tS".

'r'

'\u0072'

Time formatted for the 12-hour clock as "%tI:%tM:%tS

%Tp". The location of the morning or afternoon marker

('%Tp') may be locale-dependent.

'D'

'\u0044'

Date formatted as "%tm/%td/%ty".

'F'

'\u0046'

ISO 8601

complete date formatted as "%tY-%tm-%td".

'c'

'\u0063'

Date and time formatted as "%ta %tb %td %tT %tZ %tY",

e.g. "Sun Jul 20 16:17:00 EDT 1969".

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