how to add 30 minutes to date in java

/**
 * @author lautturi.com
 * Java example: add 30 minutes in date using java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {
        
		// Adding 10 minutes to date
		Calendar date = Calendar.getInstance();
		System.out.println("Current Date and Time : " + date.getTime());
		
		long timeInSecs = date.getTimeInMillis();
		Date newDate = new Date(timeInSecs + (30 * 60 * 1000));
		
		System.out.println("New Date and Time: " + newDate);

	}
}

output:

Current Date and Time : Sat Nov 15 21:52:28 CST 2020
New Date and Time: Sat Nov 15 22:22:28 CST 2020