Java 中的 Calendar getActualMaximum()方法，带示例

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

calendar 类的getActualMaximum(intfield _ value)方法用于根据此 Calendar 的时间值返回指定日历字段可能具有的最大值。

语法:

public int getActualMaximum(int *field_value*)

参数:该方法取整数类型的一个参数 field_value ，指需要返回最大值的日历。

返回值:该方法返回传递字段的最大值。

下面的程序说明了日历类 getActualMaximum()方法的工作: 例 1:

// Java Code to illustrate
// getActualMaximum() Method

import java.util.*;

public class CalendarClassDemo {
    public static void main(String args[])
    {
        // Creating a calendar
        Calendar calndr
            = Calendar.getInstance();

        // Getting the maximum value that
        // year field can have
        int yr
            = calndr.getActualMaximum(Calendar.YEAR);
        System.out.println("The Maximum year: "
                           + yr);

        // Getting the maximum value that
        // month field can have
        int mon
            = calndr.getActualMaximum(Calendar.MONTH);
        System.out.println("The Maximum Month is: "
                           + mon);
    }
}

Output:

The Maximum year: 292278994
The Maximum Month is: 11

例 2:

// Java Code to illustrate
// getActualMaximum() Method

import java.util.*;

public class CalendarClassDemo {
    public static void main(String args[])
    {
        // Creating a calendar object
        Calendar calndr
            = new GregorianCalendar(2018, 9, 2);

        // Getting the maximum value that
        // year field can have
        int yr
            = calndr.getActualMaximum(Calendar.YEAR);
        System.out.println("The Maximum year: "
                           + yr);

        // Getting the maximum value that
        // month field can have
        int mon
            = calndr.getActualMaximum(Calendar.MONTH);
        System.out.println("The Maximum Month is: "
                           + mon);
    }
}

Output:

The Maximum year: 292278993
The Maximum Month is: 11

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

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