BigDecimal issue

[Hd Desai]

Hi,

What is the difference between BigDecimal bd = new BigDecimal (1) and BigDecimal bd = new BigDecimal("1") ? We are using java 1.4

Please let me know about the same.

Thank you in advance.

[Jeff Verdegan]

Hd Desai wrote:Hi,

What is the difference between BigDecimal bd = new BigDecimal (1) and BigDecimal bd = new BigDecimal("1")

What do the docs tell you?

[Campbell Ritchie]

You probably won’t find much difference. But try

System.out.println(new BigDecimal(0.1));
System.out.println(new BigDecimal("0.1"));

. . . and (I hope) there will be a difference.

[Hd Desai]

Thank you for response Jeff.

I went through the docs before posting here..Was not able to get clear answer. BigDecimal = new BigDecimal("1") creates new object with 1 as string...while BigDecimal = new BigDecimal(1) is as BigInteger...but in any case it should work. But this program is failing.

[Campbell Ritchie]

Good grief! I have, more by luck than good management, hit on the same values they quote in the API documentation!

[Campbell Ritchie]

Are you using whole numbers throughout?

[Hd Desai]

thank you Ritchie.

no it is not whole number. it is number with 6 scale ..

[Campbell Ritchie]

Did you try my little example? Did you read the constructor documentation? I would have thought those would be very helpful.

And always tell us what is going wrong.

[Hd Desai]

thanks again Ritchie...yes I read whole doc..and it was my mistake i was reading 1.5 javadoc...

BigDecimal constructor does not take int till 1.5 . Now got it all.

Thank you very much once again...

[fred rosenberger]

Hd Desai wrote:But this program is failing.

just as a tip for next time...just saying "my program doesn't work" is really pointless. There are thousands of ways it could "not work". One of three things should be happening:

1) You get a compiler error. If so, tell us the EXACT text of that error. There is a LOT of info there, once you learn how to read it
2) Your program crashes when it runs. Again, you'll get some kind of message telling you what went wrong.
3) Your program runs, but behaves differently than you expect. We don't know what you expect, nor do we know what it does do. You need to tell us both.

You will find you generally get much more help, better help, and quicker help, if you do the above.

[Jeff Verdegan]

Hd Desai wrote:Thank you for response Jeff.

I went through the docs before posting here..Was not able to get clear answer. BigDecimal = new BigDecimal("1") creates new object with 1 as string...while BigDecimal = new BigDecimal(1) is as BigInteger

It says a lot more than that. You probably ought to read it, very closely. And a little bit of thinking and effort would have led you to try something like this:

import java.math.BigDecimal;

public class Scratch {

    public static void main(final String[] args) throws Exception {
        BigDecimal bd1 = new BigDecimal(1);
        BigDecimal bd2 = new BigDecimal("1");
        BigDecimal bd3 = new BigDecimal(1.0);
        BigDecimal bd4 = new BigDecimal("1.0");
        BigDecimal bd5 = new BigDecimal(1.0000);
        BigDecimal bd6 = new BigDecimal("1.0000");

        System.out.println("bd1           : " + bd1);
        System.out.println("bd1 scale     : " + bd1.scale());
        System.out.println("bd1 precision : " + bd1.precision());
        System.out.println();

        System.out.println("bd2           : " + bd2);
        System.out.println("bd2 scale     : " + bd2.scale());
        System.out.println("bd2 precision : " + bd2.precision());
        System.out.println();

        System.out.println("bd3           : " + bd3);
        System.out.println("bd3 scale     : " + bd3.scale());
        System.out.println("bd3 precision : " + bd3.precision());
        System.out.println();

        System.out.println("bd4           : " + bd4);
        System.out.println("bd4 scale     : " + bd4.scale());
        System.out.println("bd4 precision : " + bd4.precision());
        System.out.println();

        System.out.println("bd5           : " + bd5);
        System.out.println("bd5 scale     : " + bd5.scale());
        System.out.println("bd5 precision : " + bd5.precision());
        System.out.println();

        System.out.println("bd6           : " + bd6);
        System.out.println("bd6 scale     : " + bd6.scale());
        System.out.println("bd6 precision : " + bd6.precision());
        System.out.println();
    }
}

...but in any case it should work. But this program is failing.

Saying it "should work" is meaningless. It's doing exactly what it should do. The problem is that you have erroneous assumptions about how a given bit of code "should" behave.

And note that ItDoesntWorkIsUseless.(⇐click) You need to TellTheDetails(⇐click) so that people here will understand exactly what is going wrong.

[Hd Desai]

Thank you Fred for point int out and I completely agree with you on this. Will take care next time.

Thank you for your time and effort.

[Campbell Ritchie]

Hd Desai wrote:thanks again Ritchie...yes I read whole doc..and it was my mistake i was reading 1.5 javadoc...

BigDecimal constructor does not take int till 1.5 . . . .

What has an int got to do with it? You said earlier you were not using whole numbers throughout. So some of your code uses the BigDecimal(int) constructor and the rest the BigDecimal(double) constructor? As Jeff has said, we need to know the correct details before we can help.