Java中的 Calendar set() 方法及示例

Calendar 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。

句法：

public void set(int calndr_field, int new_val)

参数：该方法有两个参数：

• calndr_field ：这是日历类型，是指要更改的日历字段。
• new_val ：这是指要替换的新值。

返回值：该方法不返回任何值。

下面的程序说明了 Calendar 类的 set() 方法的工作原理：
示例 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));
    }
}

输出：

The Current Month is: 1
Altered Month is: 11

示例 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));
    }
}

输出：

The Current year is: 2019
Altered year is: 1996

参考： https: Java/util/Calendar.html#set-int-int-