如何从字符串转换为日期？

Question

I am getting the date (which is varchar in database) from database. I want to use this String as a date. the String format is "yyyy-mm-dd". How will it be converted to actual date type?

Answer 1

Two suggested options:

• SimpleDateFormat if you're happy using the JDK classes.
• DateTimeFormatter if you're doing a lot of date/time work and thus want to use Joda Time .

Personally I'm a big fan of Joda Time (and not a big fan of the JDK classes) but as you're running on Android, you may not like the size of Joda Time. (You could build your own cut-down version, admittedly.)

Answer 2

You can try this,

import java.util.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;

public class StringToDateDemo
{
    public static void main(String[] args) throws ParseException
    {
       String strDate = "2014-05-23";
       SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
       Date dt = sdf.parse(strDate);
       System.out.println(dt);
    }
}

For more on string to date in java with example refer links below,

https://docs.oracle.com/javase/8/docs/api/java/text/SimpleDateFormat.html https://www.flowerbrackets.com/java-convert-string-to-date/

Answer 3

Use the SimpleDateFormat:

Date date = new SimpleDateFormat("yyyy-MM-dd").parse(string);

Answer 4

Use SimpleDateFormat object and call the parse(String source) method to convert it back to date. Your date format will be yyyy-MM-dd . Example:

String dateString = "2010-04-06";
Date date = new SimpleDateFormat("yyyy-MM-dd").parse(dateString);

Answer 5

Use this example

try {  String str_date="11-June-07";
 DateFormat formatter ; 
 Date date ; 
  formatter = new SimpleDateFormat("dd-MMM-yy");
  date = (Date)formatter.parse(str_date);  
 System.out.println("Date is " +date );
  } catch (ParseException e)
  {System.out.println("Exception :"+e);  }  

 }