如何将java.time.LocalDate转换为java.util.Date？
以下代码段演示了如何转换java.time.LocalDate为java.util.Date，反之亦然。在代码片段的第一部分中，我们转换为对象LocalDate，Date然后又转换为LocalDate对象。在第二部分中，我们转换为对象LocalDateTime，Date然后又返回为LocalDateTime对象。
package org.nhooo.example.datetime;
import java.time.*;
import java.util.Date;
public class LocalDateToDate {
public static void main(String[] args) {
//将java.time.LocalDate转换为java.util.Date并返回
//java.time.LocalDate
LocalDate localDate = LocalDate.now();
System.out.println("LocalDate = " + localDate);
Date date1 = Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant());
System.out.println("Date = " + date1);
localDate = date1.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
System.out.println("LocalDate = " + localDate);
System.out.println();
//将java.time.LocalDateTime转换为java.util.Date并返回
//java.time.LocalDateTime
LocalDateTime localDateTime = LocalDateTime.now();
System.out.println("LocalDateTime = " + localDateTime);
Date date2 = Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant());
System.out.println("Date = " + date2);
localDateTime = date2.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
System.out.println("LocalDateTime = " + localDateTime);
}
}代码段的结果：
LocalDate = 2017-02-14 Date = Tue Feb 14 00:00:00 WITA 2017 LocalDate = 2017-02-14 LocalDateTime = 2017-02-14T10:34:49.562 Date = Tue Feb 14 10:34:49 WITA 2017 LocalDateTime = 2017-02-14T10:34:49.562