Convert java.time.LocalDate into java.util.Date type

Date date = Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant());

That assumes your date chooser uses the system default timezone to transform dates into strings.

Here's a utility class I use to convert the newer java.time classes to java.util.Date objects and vice versa:

import java.time.Instant;import java.time.LocalDate;import java.time.LocalDateTime;import java.time.ZoneId;import java.util.Date;public class DateUtils {  public static Date asDate(LocalDate localDate) {    return Date.from(localDate.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant());  }  public static Date asDate(LocalDateTime localDateTime) {    return Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant());  }  public static LocalDate asLocalDate(Date date) {    return Instant.ofEpochMilli(date.getTime()).atZone(ZoneId.systemDefault()).toLocalDate();  }  public static LocalDateTime asLocalDateTime(Date date) {    return Instant.ofEpochMilli(date.getTime()).atZone(ZoneId.systemDefault()).toLocalDateTime();  }}

Edited based on @Oliv comment.

Disclaimer: For illustrating existing java apis only. Should not be used in production code.

You can use java.sql.Date.valueOf() method as:

Date date = java.sql.Date.valueOf(localDate);

No need to add time and time zone info here because they are taken implicitly.
See LocalDate to java.util.Date and vice versa simplest conversion?