Java simple calculation involving double

*public static void main(String[] args) {*
System.out.println("Output "+300.025d100.0);*
The above code is returning me 30002.499999999996 though I was expecting 30002.5

import java.text.DecimalFormat;
import java.text.NumberFormat;
public class Test {
NumberFormat f = new DecimalFormat("0.0");
System.out.println("Output "+new Float(f.format(300.025d*100.0)));
}

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Simple calculation involving KOMV-KBETR giving issues

Hello Experts,
I have a pricing routine in which I am doing some calculation on a field typed on KOMV-KBETR. The calculation is similar to the code shown below. But this simple calculation is not giving correct results. For example, the correct result from the sample code below should have been 180.00, but the result I am getting is 18000.00. Please help to resolve this. Thanks in advance
Also, if you try to execute the below code in a custom program, you will get the correct result. But the issue is happening in a pricing routiine.
TABLES: komv.
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- How did you fill KOMV (are you in an exit, a specific program, do you use a FM like PRICING_GET_CONDITIONS ?)
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Simple calculator to use log, successor, predecessor ?

Hello. I have this simple calculator program, and I am having trouble with the log, successor (if 8 entered returns 9), predecessor (if 8 entered returns 7). The log gets this error:
Calculator.java:113: log(double) in java.lang.Math cannot be applied to (int,int)
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/*          else if(actionCommand.equals("v"))
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A 'double' is not the same as an 'int' and they can't fit the one value-type into the memory of the other.
Although this is a logical math problem, simple for us, we have better memory than a computer.
An integer maps a certain amount of memory to fix its maximum value, when you cast, you must cast into a type that is the same or smaller in terms of memory byte size.
Just like you can't cast some objects as others, you can't cast a double as an int.
The error is telling you that the result of a method call is incompatiable with the argument of another method call.
The fault lies at Calculator.java source file at line 113 in the file. This is where you call the method log() which requires an argument of type 'double' which is located in Math class log method where the two arguments are 'int' and 'int'.
However, in your call, you inflect the reference 'result' as the product of the method call in which the 1st argument is also 'result'
That in itself is bad design. It's like saying "Joe is the product of Mike (who uses Joe)."
Memory-wise, this could cause possible leaks.

Need help with starting a simple calculator

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First of all, I don't
know how to append text to a textfield.
textField.setText( textField.getText() + TEXT_YOU_WANT_TO_APPEND );
Then,
when the user clicks one of the buttons, the compiler
goes crazy, and nothing is displayed.No, the compiler doesn't go crazy, the compiler has done it's job by then. However, you do get a NullPointerException, and the stacktrace tells you that the problem is on the following line:
txtDisplay.setText(strNames);
It turns out that strNames is null. I leave it to you to find out why. ;-)

Simple calculator, but ...

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Hi
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Last edited by kdar (2012-05-11 13:21:05)

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#!/usr/bin/env python
#This program goes through rayleigh line data and finde the mean shift
#in nanometers and the standard deviation
import sys, os
import numpy as np
import scipy as sp
import scipy.optimize as op
import time
ray = []
filenames = []
line = 633
def rs(wavelength,laser):
return ((float(1)/laser)-(float(1)/wavelength))*(10**7)
def main(argv): #Goes through a file and finds the peak position of the rayleigh line
f = np.loadtxt(argv).transpose() #opens the file
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ray.append(f[0,indi])
filenames.append(str(argv))
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for filename in sys.argv[1:]:
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variance = np.var(ray)
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output.close()
Last edited by Yurlungur (2012-05-13 21:14:54)

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DATA lv_input TYPE i.
DATA lv_flag TYPE c.
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wd_this->set_input(
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wd_this->set_flag(
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method ONACTIONONE .
wd_this->enter_data(
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endmethod.
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method ENTER_OPERATION .
wd_this->set_flag(
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wd_this->set_operation(
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endmethod.
Use of above method in operations button
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wd_this->enter_operation(
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endmethod.
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method ONACTIONEQL .
DATA lv_operation TYPE string.
DATA lv_input TYPE i.
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wd_this->get_input(
     IMPORTING
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wd_this->get_operation(
    IMPORTING
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CASE lv_operation.
WHEN 'ADD'.
lv_input = wd_this->gv_previous + lv_input.
WHEN 'SUB'.
lv_input = wd_this->gv_previous - lv_input.
WHEN 'MUL'.
lv_input = wd_this->gv_previous * lv_input.
WHEN 'DIV'.
lv_input = wd_this->gv_previous / lv_input.
WHEN OTHERS.
ENDCASE.
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wd_this->set_input(
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***Clear the operation attribute
wd_this->set_operation(
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endmethod.
Getter Methods example for attribute INPUT
method GET_INPUT .
DATA lo_el_context TYPE REF TO if_wd_context_element.
DATA ls_context TYPE wd_this->element_context.
DATA lv_input TYPE wd_this->element_context-input.
get element via lead selection
lo_el_context = wd_context->get_element( ).
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IF lo_el_context IS INITIAL.
ENDIF.
get single attribute
lo_el_context->get_attribute(
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    IMPORTING
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EV_INPUT = lv_input.
endmethod.
Setter Methods example for attribute INPUT
method SET_INPUT .
DATA lo_el_context TYPE REF TO if_wd_context_element.
DATA ls_context TYPE wd_this->element_context.
DATA lv_input TYPE wd_this->element_context-input.
get element via lead selection
lo_el_context = wd_context->get_element( ).
@TODO handle not set lead selection
IF lo_el_context IS INITIAL.
ENDIF.
@TODO fill attribute
lv_input = iv_input.
set single attribute
lo_el_context->set_attribute(
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endmethod.
Hope this will be helpful. Let me know if you have any doubt.
Its working fine for me.
Regards,
Sayan

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Chris

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Hi all. I realize this might fall into the dumb question category, but I can't find any tutorials or walkthroughs on it.
I want to make a simple calculator. The user inputs the variables and that changes the values displayed.
I have all of the formulas as a table in Excel. I imported the data source (Excel), created a gallery and connected the various input and text boxes to the corresponding column labels in Excel.
But when you change the values in the text input box the other fields don't change. It's almost like Siena forgot the formulas and is just displaying the text.
Any help or directions to a tutorial would be greatly appreciated.
Thanks!

Hi,
When importing data from Excel, Siena retains the values not the initial formula. So you will need to create these formula using Siena expressions.
As a simple example, let's assume you want to add the values of two input visuals and display the result in a lablel, the text expression of that label would be:
label: InputText1!Text+InputText2!Text
Olivier

Java simple calculation involving double

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