decimal format conversion

[kumar m]

Hi All,
In our project, the calculated tax amount is assigned to a double variable. Using the method format present in DecimalFormat class, total tax amount is rounded to 2 decimal places and assigned to a String variable.
But during execution of the program in JRun3.1 server and JDK1.2 we found JRun goes down when decimal format conversion takes place.
So please suggest any other way to round of the double value to 2 decimal places and store in a string variable.
Thank you
Regards
kumar.

[Dan Richardson]

Here are two ways that I can think of . . .
1).

import java.math.BigDecimal;
.
.
.
double d = 1.333;
BigDecimal big = new BigDecimal(d);
big = big.setScale(2, BigDecimal.ROUND_HALF_UP);
String s = big.toString();
System.out.println(s);  

2).

double d = 1.333;
d = d * 100.0;
d = Math.round(d);
d = d / 100.0;
Double dVal = new Double(d);
String s = dVal.toString();
System.out.println (s);

[James Carman]

Are you using a shared DecimalFormat object? DecimalFormat objects are not synchronized, so you shouldn't try to use them across threads.

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