Java Basic Tutorial

Java Process Control

Java Array

Java Object-Oriented(I)

Java Object-Oriented(II)

Java Object-Oriented(III)

Java Exception Handling

Java List

Java Queue(Queue)

Java Map Collection

Java Set Collection

Java Input Output(I/O)

Java Reader/Writer

Java Other Topics

Java Method Overloading Java Examples Comprehensive

Java program to get the current date/Time

Java Examples Comprehensive

In this program, you will learn how to get the current date and time in Java format.

Example1To get the current date and time in the default format

import java.time.LocalDateTime;
public class CurrentDateTime {}}
　　　　public static void main(String[] args) {
　　　　　　　　LocalDateTime current = LocalDateTime.now();
　　　　　　　　System.out.println("Current date and time: ",　+　current);
　　　　}
}

When running the program, the output is:

Current date and time:　2019-08-02T11:25:44.973

In the above program, the current date and time are stored in the variable current using the LocalDateTime.now() method

For the default format, you just need to use the toString() method internally to convert it from the LocalDateTime object to a string

Example2To get the current date and time using a pattern

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class CurrentDateTime {}}
　　　　public static void main(String[] args) {
　　　　　　　　LocalDateTime current = LocalDateTime.now();
　　　　　　　　DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS);
　　　　　　　　String formatted = current.format(formatter);
　　　　　　　　System.out.println("Current date and time: ",　+　formatted);
　　　　}
}

When running the program, the output is:

Current date and time:　2017-08-02　11:29:57.401

In the above program, we used a DateTimeFormatter object to define the format as Year-Month-Day Hours:Minutes:Seconds.Milliseconds pattern

Then, we use the format() method of LocalDateTime to use the given formatter. This gives us the formatted string output.

Example3To get the current date and time using predefined constants

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class CurrentDateTime {}}
　　　　public static void main(String[] args) {
　　　　　　　　LocalDateTime current = LocalDateTime.now();
　　　　　　　　DateTimeFormatter formatter = DateTimeFormatter.BASIC_ISO_DATE;
　　　　　　　　String formatted = current.format(formatter);
　　　　　　　　System.out.println("The current date is: ");　+　formatted);
　　　　}
}

When running the program, the output is:

Current date is:　20170802

In the above program, we used the predefined format constant BASIC_ISO_DATE to get the current ISO date as output.

Example4To get the current date and time with localized style

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
public class CurrentDateTime {}}
　　　　public static void main(String[] args) {
　　　　　　　　LocalDateTime current = LocalDateTime.now();
　　　　　　　　DateTimeFormatter formatter = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.MEDIUM);
　　　　　　　　String formatted = current.format(formatter);
　　　　　　　　System.out.println("The current date is: ");　+　formatted);
　　　　}
}

When running the program, the output is:

The current date is: Aug　2,　2017　11:44:19　AM

In the above program, we used the localized style Medium to get the current date and time in the given format. There are other styles as well, such as: Full, Long, and Short.

Java Examples Comprehensive

Java Method Overloading Java Examples Comprehensive