Java Math MathContext.equals() 方法

package com.codingdict;



import java.math.*;



public class MathContextDemo {



   public static void main(String[] args) {



      // create 3 MathContext objects

      MathContext mc1, mc2, mc3;



      // assign context settings to mc1, mc2, mc3

      mc1 = new MathContext(2);

      mc2 = new MathContext(2, RoundingMode.HALF_UP);

      mc3 = new MathContext(2, RoundingMode.HALF_DOWN);



      // create 2 boolean objects

      Boolean b1, b2;



      // compare context settings of mc1 with mc2, mc3

      b1 = mc1.equals(mc2);

      b2 = mc1.equals(mc3);



      String str1 = "Context settings of mc1 and mc2 are equal is " + b1;

      String str2 = "Context settings of mc1 and mc3 are equal is " + b2;



      // print b1, b2 values

      System.out.println( str1 );

      System.out.println( str2 );

   }

}