Java 中的日历集()方法，示例

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

日历类中的 set(int calndr_field ，int new_val ) 方法用于将 calndr_field 值设置为 new_val。此日历的旧字段被新字段替换。

语法:

public void set(int *calndr_field*, int *new_val*)

参数:该方法取两个参数:

  • calndr_field :此为 Calendar 类型，指的是要修改的日历的字段。
  • new_val :这是指要替换为的新值。

返回值:该方法不返回值。

下面的程序说明了 Calendar 类 set()方法的工作: 例 1:

// Java code to illustrate
// set() method

import java.util.*;
public class Calendar_Demo {
    public static void main(String args[])
    {

        // Creating a calendar
        Calendar calndr = Calendar.getInstance();

        // Displaying the month
        System.out.println("The Current Month is: "
                           + calndr.get(
                                 Calendar.MONTH));

        // Replacing with a new value
        calndr.set(Calendar.MONTH, 11);

        // Displaying the modified result
        System.out.println("Altered Month is: "
                           + calndr.get(
                                 Calendar.MONTH));
    }
}

Output:

The Current Month is: 1
Altered Month is: 11

例 2:

// Java code to illustrate
// set() method

import java.util.*;
public class Calendar_Demo {
    public static void main(String args[])
    {

        // Creating a calendar
        Calendar calndr = Calendar.getInstance();

        // Displaying the Year
        System.out.println("The Current year is: "
                           + calndr.get(
                                 Calendar.YEAR));

        // Replacing with a new value
        calndr.set(Calendar.YEAR, 1996);

        // Displaying the modified result
        System.out.println("Altered year is: "
                           + calndr.get(
                                 Calendar.YEAR));
    }
}

Output:

The Current year is: 2019
Altered year is: 1996

参考:https://docs . Oracle . com/javase/8/docs/API/Java/util/calendar . html # set-int-int-

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