Java Math MathContext.getPrecision() 方法

package com.codingdict;



import java.math.*;



public class MathContextDemo {



   public static void main(String[] args) {



      // create 2 MathContext objects

      MathContext mc1, mc2;



      // assign context settings to mc1, mc2

      mc1 = new MathContext(4, RoundingMode.CEILING);

      mc2 = new MathContext(50, RoundingMode.HALF_EVEN);



      // create 2 int objects

      int i1, i2;



      // assign precision of mc1, mc2 to i1, i2

      i1 = mc1.getPrecision();

      i2 = mc2.getPrecision();



      String str1 = "Precision of mc1 is " + i1;

      String str2 = "Precision of mc2 is " + i2;



      // print i1, i2 values

      System.out.println( str1 );

      System.out.println( str2 );

   }

}