Java Math BigInteger.compareTo() 方法

package com.codingdict;



import java.math.*;



public class BigIntegerDemo {



   public static void main(String[] args) {



      // create 2 BigInteger objects

      BigInteger bi1, bi2;



      bi1 = new BigInteger("6");

      bi2 = new BigInteger("3");



      // create int object

      int res;



      // compare bi1 with bi2

      res = bi1.compareTo(bi2);



      String str1 = "Both values are equal ";

      String str2 = "First Value is greater ";

      String str3 = "Second value is greater";



      if( res == 0 )

      System.out.println( str1 );

      else if( res == 1 )

      System.out.println( str2 );

      else if( res == -1 )

      System.out.println( str3 );

   }

}