java.time.YearMonth.getLong() 方法示例

package com.codingdict;

import java.time.YearMonth;
import java.time.temporal.ChronoField;

public class YearMonthDemo {
   public static void main(String[] args) {

      YearMonth date = YearMonth.of(2017,12);
      System.out.println(date.getLong(ChronoField.YEAR_OF_ERA));  
   }
}