Java – How to change date format in a String
If Java 8, DateTimeFormatter
, else SimpleDateFormat
to change the date format in a String.
1. DateTimeFormatter (Java 8)
Convert the String to LocalDateTime
and change the date format with DateTimeFormatter
DateFormatExample1.java
package com.mkyong;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class DateFormatExample1 {
// date format 1
private static final DateTimeFormatter dateFormatter
= DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.S");
// date format 2
private static final DateTimeFormatter dateFormatterNew
= DateTimeFormatter.ofPattern("EEEE, MMM d, yyyy HH:mm:ss a");
public static void main(String[] args) {
String date = "2019-05-23 00:00:00.0";
// string to LocalDateTime
LocalDateTime ldateTime = LocalDateTime.parse(date, dateFormatter);
System.out.println(dateFormatter.format(ldateTime));
// change date format
System.out.println(dateFormatterNew.format(ldateTime));
}
}
Output
2019-05-23 00:00:00.0
Thursday, May 23, 2019 00:00:00 AM
Note
More Java 8 String to LocalDateTime examples
More Java 8 String to LocalDateTime examples
2. SimpleDateFormat
Convert the String to Date
and change the date format with SimpleDateFormat
SimpleDateFormatExample.java
package com.mkyong;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class SimpleDateFormatExample {
private static final SimpleDateFormat sdf =
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S");
private static final SimpleDateFormat sdfNew =
new SimpleDateFormat("EEEE, MMM d, yyyy HH:mm:ss a");
public static void main(String[] args) {
String dateString = "2019-05-23 00:00:00.0";
try {
// string to date
Date date = sdf.parse(dateString);
System.out.println(sdf.format(date));
System.out.println(sdfNew.format(date));
} catch (ParseException e) {
e.printStackTrace();
}
}
}
Output
2019-05-23 00:00:00.0
Thursday, May 23, 2019 00:00:00 AM
Note
More Java String to Date examples
More Java String to Date examples
Could you please add some CQRS tutorials ?