Java 中的日历完成()方法，示例

原文:https://www . geesforgeks . org/calendar-complete-method-in-Java-with-examples/

Calendar 类中的 complete() 方法用于填充日历字段中任何未设置的字段。它遵循以下完成过程:

  1. 首先，如果尚未计算时间值，则调用 computeTime()方法从日历字段值中计算时间值。
  2. 其次，要计算所有日历字段值，使用 computeFields()方法。

语法:

protected void complete()

参数:该方法不取任何参数。

返回值:该方法不返回值。

下面的程序说明了 Calendar 类的 complete()方法的工作: 例 1:

// Java Code to illustrate
// complete() 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
        // complete()
        calndr.set(GregorianCalendar.YEAR, 2008);
        calndr.complete();

        // Displaying the current date
        System.out.println("The new"
                           + " date is: " + calndr.getTime());
    }
}

Output:

The Current date is: Wed Feb 13 15:39:33 UTC 2019
The new date is: Tue Jan 01 00:00:00 UTC 2008

例 2:

// Java Code to illustrate
// complete() 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
        // complete()
        calndr.set(GregorianCalendar.YEAR, 1996);
        calndr.complete();

        // Displaying the current date
        System.out.println("The new"
                           + " date is: " + calndr.getTime());
    }
}

Output:

The Current date is: Wed Feb 13 15:39:36 UTC 2019
The new date is: Mon Jan 01 00:00:00 UTC 1996

参考:https://docs . Oracle . com/javase/7/docs/API/Java/util/calendar . html # complete()

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