Java Math BigDecimal.setScale() RoundingMode 方法

package com.codingdict;



import java.math.*;



public class BigDecimalDemo {



   public static void main(String[] args) {



      // create 2 BigDecimal Objects

      BigDecimal bg1, bg2;



      bg1 = new BigDecimal("123.12678");



      // set scale of bg1 to 2 in bg2

      // 0 specifies ROUND_UP

      bg2 = bg1.setScale(2, 0);



      String str = bg1 + " after changing the scale to 2 and rounding is " +bg2;



      // print bg2 value

      System.out.println( str );

   }

}