Java Math BigInteger.equals() 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("123");

      bi2 = new BigInteger("123");



      // create 2 boolean objects

      Boolean b1, b2;



      // compare bi1 with bi2

      b1 = bi1.equals(bi2);



      // compare bi1 with an object value 123, which is not a BigIntger

      b2 = bi1.equals("123");



      String str1 = bi1 + " equals BigInteger " + bi2 + " is " +b1;

      String str2 = bi1 + " equals object value 123 is " +b2;



      // print b1, b2 values

      System.out.println( str1 );

      System.out.println( str2 );

   }

}