Solved

Add two BigDecimal values

Posted on 2007-11-22
4
1,345 Views
Last Modified: 2013-12-29
Hello,

I expected in the folowing code "totalN" to be 52.75,
thank you for any help.

BigDecimal totalN = new BigDecimal("0");
totalN.add(nR1);
System.err.println(nR1.doubleValue());      // 52.75
System.err.println(totalN.doubleValue());  // 0.0
0
Comment
Question by:matthew016
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 7

Accepted Solution

by:
UrosVidojevic earned 380 total points
ID: 20335553
try:

totalN = totalN.add(nR1);
0
 
LVL 7

Expert Comment

by:UrosVidojevic
ID: 20335573
From java documentation:

add

public BigDecimal add(BigDecimal val)

    Returns a BigDecimal whose value is (this + val), and whose scale is max(this.scale(), val.scale()).

    Parameters:
        val - value to be added to this BigDecimal.
    Returns:
        this + val

In other words number1.add(number2) doesn't modify number1 object!
0
 
LVL 9

Assisted Solution

by:ysnky
ysnky earned 20 total points
ID: 20335616
you have to catch add operation result. try this;

            BigDecimal nR1 = new BigDecimal(52.75);
            BigDecimal totalN = new BigDecimal("0");
            totalN = totalN.add(nR1);

            System.err.println(nR1.doubleValue());      
            System.err.println(totalN.doubleValue());
0
 
LVL 17

Assisted Solution

by:contactkarthi
contactkarthi earned 100 total points
ID: 20336285
have a look at this one to get a more understanding on why..
http://www.javaranch.com/journal/2003/04/immutable.htm
0

Featured Post

Transaction Monitoring Vs. Real User Monitoring

Synthetic Transaction Monitoring Vs. Real User Monitoring: When To Use Each Approach? In this article, we will discuss two major monitoring approaches: Synthetic Transaction and Real User Monitoring.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …

707 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question