Java Math compareTo() 方法

package com.codingdict;



import java.math.*;



public class BigDecimalDemo {



   public static void main(String[] args) {



      // create 2 BigDecimal objects

      BigDecimal bg1, bg2;



      bg1 = new BigDecimal("10");

      bg2 = new BigDecimal("20");



      //create int object

      int res;



      res = bg1.compareTo(bg2); // compare bg1 with bg2



      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 );

   }

}