Java BigDecimal

 1 package com.helen.test;
 2 
 3 import java.math.BigDecimal;
 4 
 5 public class TestBigDecimal {
 6 
 7     /**
 8      * @param args
 9      */
10     public static void main(String[] args) {
11         
12         double d1=0.31125;
13         double d2=3;
14         System.out.println(d1*d2); //0.9337500000000001
15         
16         float f1=0.31125f;
17         float f2=3;
18         System.out.println(f1*f2); //0.93375003
19         
20         BigDecimal b1=new BigDecimal(0.31125+"");
21         BigDecimal b2=new BigDecimal(3);
22         BigDecimal b3= b1.multiply(b2);
23 
24         System.out.println(b3); //0.93375
25         
26         
27         
28 
29     }
30 
31 }