Java Period withYears()方法及示例

Period类 的 withYears() 方法是用来获得一个具有指定年数的周期。该年数作为参数以整数形式传递。

语法

public Period withYears(int numberOfYears)

参数： 该方法接受一个参数numberOfYears，它是这个Period中要改变的年数。

返回： 该函数返回一个带有作为参数的年数的Period。

下面是Period.withYears()方法的实现。

例子 1:

// Java code to demonstrate withYears() method
  
import java.time.Period;
  
class GFG {
    public static void main(String[] args)
    {
  
        // Get the String to be withYearsd
        String period = "P1Y2M21D";
  
        // Parse the String into Period
        Period p = Period.parse(period);
  
        System.out.println("Period: " + p);
  
        // Get the number of years
        int numberOfYears = 5;
  
        // Change the numberOfYears of this Period
        // using withYears() method
        System.out.println("New Period: "
                           + p.withYears(numberOfYears));
    }
}

输出:

Period: P1Y2M21D
New Period: P5Y2M21D

例2:

// Java code to demonstrate withYears() method
  
import java.time.Period;
  
class GFG {
    public static void main(String[] args)
    {
  
        // Get the String to be withYearsd
        String period = "-P1Y2M21D";
  
        // Parse the String into Period
        Period p = Period.parse(period);
  
        System.out.println("Period: " + p);
  
        // Get the number of years
        int numberOfYears = -5;
  
        // Change the numberOfYears of this Period
        // using withYears() method
        System.out.println("New Period: "
                           + p.withYears(numberOfYears));
    }
}

输出:

Period: P-1Y-2M-21D
New Period: P-5Y-2M-21D

参考资料: https://docs.oracle.com/javase/9/docs/api/java/time/Period.html#withYears-int-