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W3schools - Scanner / Date

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Scanner

The Scanner class is used to get user input and it is found in the “java.util” package

To use the “Scanner” class

// ----1. Create an object of the class----
Scanner myObj = new Scanner(System.in);
System.out.println(“Enter username”);

// ----2. Use any of the available methods----
String userName = myObj.nextLine();
System.out.println(“Username is : ” + userName);

// methods found in the “Scanner” class documentation
// (nextDouble(), nextInt(),... each data type

Date

import java.time package to work with the date and time API

The package includes many date and time classes

Class Description
LocalDate Represents a date (yyyy-MM-dd)
LocalTime Represents a time(HH-mm-ss-ns)
LocalDateTime Represents both a date and a time
DateTimeFormatter Formatter for displaying and parsing date time objects

Display Current

import java.time.LocalDateTime;		// import LocalDateTime class
import java.time.format.DateTimeFormatter // import the DateTimeFormatter class
public class Main{
	public static void main(String[] args){
		LocalDateTime myObj = LocalDateTime.now();	// create a date object
		System.out.print(myObj);	// output 2021-12-19T09:00:00.839828
		DateTimeFormatter myFormatObj = DateTimeFormatter.ofPattern(“dd-MM-yy HH:mm:ss”);
		String formattedDate = myObj.format(myFormatObj);
		System.out.print(formattedDate); // output 19-12-2021 09:00:00
	}
}

ofPattern() method accepts all sorts of values

  • “yyyy-MM-dd”, “dd/MM/yyy”, “dd-MMM-yyy”, “E,MMM dd yyy”