Java Math BigInteger.clearBit() 方法

package com.codingdict;



import java.math.*;



public class BigIntegerDemo {



   public static void main(String[] args) {



      // create 2 BigInteger objects

      BigInteger bi1, bi2;  



      // assign value to bi1

      bi1 = new BigInteger("7"); 



      // perform clearbit operation on bi1 with index 2

      bi2 = bi1.clearBit(2);



      String str = "Clearbit operation on " +bi1+ " at index 2 gives " +bi2;



      // print bi2 value

      System.out.println( str );

   }

}