/**
 * @author lautturi.com
 * Java example: get year month day from date string in java
 */
import java.util.*;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
public class Lautturi {
	public static void main(String[] args) throws ParseException {
		SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");  
		Date parse = sdf.parse("23/07/2019");  
		Calendar c = Calendar.getInstance();  
		c.setTime(parse);  
		System.out.println("Date : " + c.get(Calendar.YEAR) +""+((int)c.get(Calendar.MONTH)+1)  +""+ c.get(Calendar.DATE) );
		
	}
}
output:
Date : 2019723