Few examples to show you how to format java.time.LocalDateTime in Java 8.
To format a LocalDateTime object, uses DateTimeFormatter
TestDate1.java
package com.mkyong.time;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class TestDate1 {
public static void main(String[] args) {
//Get current date time
LocalDateTime now = LocalDateTime.now();
System.out.println("Before : " + now);
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
String formatDateTime = now.format(formatter);
System.out.println("After : " + formatDateTime);
}
}
Output
Before : 2016-11-09T11:44:44.797
After : 2016-11-09 11:44:44
2. String -> LocalDateTime
Another example to convert a String to LocalDateTime
TestDate2.java
package com.mkyong.time;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class TestDate2 {
public static void main(String[] args) {
String now = "2016-11-09 10:30";
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
LocalDateTime formatDateTime = LocalDateTime.parse(now, formatter);
System.out.println("Before : " + now);
System.out.println("After : " + formatDateTime);
System.out.println("After : " + formatDateTime.format(formatter));
}
}
Output
Before : 2016-11-09 10:30
After : 2016-11-09T10:30
After : 2016-11-09 10:30
References
- DateTimeFormatter JavaDoc
- Java 8 – How to convert String to LocalDate