Calendar类中的computeTime()方法用于将fields []中的当前日历字段值转换为毫秒时间值time。
用法:
protected abstract void computeTime()
参数:该方法不带任何参数。
返回值:该方法不返回任何值。
以下示例程序旨在说明Calendar类的computeTime()方法的用法:
示例1:
// Java Code to illustrate
// computeTime() Method
import java.util.*;
public class CalendarClassDemo
extends GregorianCalendar {
public static void main(String args[])
{
// Creating calendar object
CalendarClassDemo calndr = new CalendarClassDemo();
// Displaying the current date
System.out.println("The Current "
+ "date is: " + calndr.getTime());
// Clearing the calendar
calndr.clear();
// Set a new year and call
// computeTime()
calndr.set(GregorianCalendar.YEAR, 2016);
calndr.computeTime();
// Displaying the current date
System.out.println("The recent"
+ " date is: " + calndr.getTime());
}
}
输出:
The Current date is: Wed Feb 13 16:27:12 UTC 2019 The recent date is: Fri Jan 01 00:00:00 UTC 2016
示例2:
// Java Code to illustrate
// computeTime() Method
import java.util.*;
public class CalendarClassDemo
extends GregorianCalendar {
public static void main(String args[])
{
// Creating calendar object
CalendarClassDemo calndr = new CalendarClassDemo();
// Displaying the current date
System.out.println("The Current "
+ "date is: " + calndr.getTime());
// Clearing the calendar
calndr.clear();
// Set a new year and call
// computeTime()
calndr.set(GregorianCalendar.YEAR, 2000);
calndr.computeTime();
// Displaying the current date
System.out.println("The recent"
+ " date is: " + calndr.getTime());
}
}
输出:
The Current date is: Wed Feb 13 16:27:15 UTC 2019 The recent date is: Sat Jan 01 00:00:00 UTC 2000
参考: https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#computeTime()
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注:本文由纯净天空筛选整理自Chinmoy Lenka大神的英文原创作品 Calendar computeTime() method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。