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How to convert string to date type in java

藏色散人Original: 2019-05-27 11:31:5719009browse

The conversion between String and Date in java is done using SimpleDateFormat. When using SimpleDateFormat, remember to import java.text.SimpleDateFormat.

Java.lang.Object

| ----java.text.Format

| ----java.text .DateFormat

##| ->String

java.text.SimpleDateFormat formatter = new SimpleDateFormat( "yyyy-MM-dd ");
String s= "2011-07-09 "; 
Date date =  formatter.parse(s);

Of course there are many ways to express the SimpleDateFormat format:

SimpleDateFormat function syntax:

java.text.SimpleDateFormat formatter = new SimpleDateFormat( "yyyy-MM-dd ");
String date = formatter.format(new Date());//格式化数据

Common standard writing method "yyyy-MM- dd HH:mm:ss", pay attention to the case. The time is in 24-hour format. To convert the 24-hour format into 12-hour format, you only need to change HH to hh. No additional functions are needed.

Complex example

>    G 年代标志符
     y 年
     M 月
     d 日
     h 时 在上午或下午 (1~12)
     H 时 在一天中 (0~23)
     m 分
     s 秒
     S 毫秒
     E 星期
     D 一年中的第几天
     F 一月中第几个星期几
     w 一年中第几个星期
     W 一月中第几个星期
     a 上午 / 下午 标记符
     k 时 在一天中 (1~24)
     K 时 在上午或下午 (0~11)
     z 时区

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Java String Object date format

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