toInstant()方法被添加到可用于将它们转换到新的日期时间的API原始日期和日历对象。使用ofInstant(Insant,ZoneId)方法得到一个LocalDateTime或ZonedDateTime对象。
让我们来看看他们的操作。
选择使用任何编辑器创建以下java程序在 C:/> JAVA
Java8Tester.java
import java.time.LocalDateTime;import java.time.ZonedDateTime;import java.util.Date;import java.time.Instant;import java.time.ZoneId;public class Java8Tester {
public static void main(String args[]){
Java8Tester java8tester = new Java8Tester();
java8tester.testBackwardCompatability();
}
public void testBackwardCompatability(){
//Get the current date
Date currentDate = new Date();
System.out.println("Current date: " + currentDate);
//Get the instant of current date in terms of milliseconds
Instant now = currentDate.toInstant();
ZoneId currentZone = ZoneId.systemDefault();
LocalDateTime localDateTime = LocalDateTime.ofInstant(now, currentZone);
System.out.println("Local date: " + localDateTime);
ZonedDateTime zonedDateTime = ZonedDateTime.ofInstant(now, currentZone);
System.out.println("Zoned date: " + zonedDateTime);
} }
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