org.dromara.hutool.core.date.format

Class DatePattern

java.lang.Object

org.dromara.hutool.core.date.format.DatePattern

public class DatePattern
extends Object

日期格式表达式，用于解析和格式化日期时间。

Since:

6.0.0

Author:

Looly

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	DatePattern.NumberRule Inner class defining a numeric rule.
static interface	DatePattern.Rule 规则

Constructor Summary

Constructors

Constructor and Description
DatePattern(String patternStr, Locale locale, TimeZone timeZone) 构造

Method Summary

Modifier and Type	Method and Description
<B extends Appendable> B	applyRules(Calendar calendar, B buf) 根据指定格式，格式化日期时间
int	getEstimateLength() 获取估算日期长度
protected static String	parseToken(String pattern, int[] indexRef) Performs the parsing of tokens.
protected static DatePattern.NumberRule	selectNumberRule(int field, int padding) Gets an appropriate rule for the padding required.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DatePattern

public DatePattern(String patternStr,
                   Locale locale,
                   TimeZone timeZone)

构造

Parameters:

patternStr - 日期表达式字符串

locale - 地域信息

timeZone - 时区

Method Detail

getEstimateLength

public int getEstimateLength()

获取估算日期长度

Returns:

日期格式表达式长度

applyRules

public <B extends Appendable> B applyRules(Calendar calendar,
                                           B buf)

根据指定格式，格式化日期时间

Type Parameters:

B - Appendable实现类, 一般为 StringBuilder 或 StringBuffer.

Parameters:

calendar - Calendar

buf - 格式化后写出的Appendable

Returns:

定义的Appendable

parseToken

protected static String parseToken(String pattern,
                                   int[] indexRef)

Performs the parsing of tokens.

Parameters:

pattern - the pattern

indexRef - index references

Returns:

parsed token

selectNumberRule

protected static DatePattern.NumberRule selectNumberRule(int field,
                                                         int padding)

Gets an appropriate rule for the padding required.

Parameters:

field - the field to get a rule for

padding - the padding required

Returns:

a new rule with the correct padding