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Geekpedia » Java Code » Simple Interest Calculator Java Applet

Simple Interest Calculator Java Applet

A sample interest calculator, very basic in functionality, coded in Java and ready to be compiled and executed as a Java Applet.

 On Friday, July 31st 2009 at 08:30 PM
By Andrew Pociu (View Profile)
*****   (Rated 5 with 1 votes)
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  1. import java.awt.*;
  2. import java.awt.event.*;
  3. import java.applet.*;
  4. import java.text.NumberFormat;
  5.  
  6. public class InterestCalculator extends Applet implements ActionListener
  7. {
  8.         TextField textPresentVal = new TextField("0", 10);
  9.         TextField textInterestRate = new TextField("0", 10);
  10.         TextField textPeriods = new TextField("0", 10);
  11.         Label lblPresentVal = new Label("Present Value");
  12.         Label lblInterestRate = new Label("Interest Rate");
  13.         Label lblPeriods = new Label("Number of Periods");
  14.         Label lblFutureVal = new Label("Future Value:");
  15.         Button btnOk = new Button("Calculate");
  16.  
  17.         public void init()
  18.         {
  19.  
  20.                 add(lblPresentVal);
  21.                 add(textPresentVal);
  22.                 add(lblInterestRate);
  23.                 add(textInterestRate);
  24.                 add(lblPeriods);
  25.                 add(textPeriods);
  26.                 add(lblFutureVal);
  27.                 add(btnOk);
  28.  
  29.                 btnOk.addActionListener(this);
  30.         }
  31.  
  32.         public void actionPerformed(ActionEvent evt)  
  33.         {
  34.             if (evt.getSource() == btnOk)
  35.             {
  36.                 int PresentVal = Integer.parseInt(textPresentVal.getText());
  37.                 int InterestRate = Integer.parseInt(textInterestRate.getText());
  38.                 int Periods = Integer.parseInt(textPeriods.getText());
  39.                 double FutureVal = PresentVal * (Math.pow((1 + InterestRate), Periods));
  40.                 NumberFormat nf = NumberFormat.getCurrencyInstance();
  41.                 lblTotal.setText("Future Value: " + nf.format(FutureVal));
  42.  
  43.                 repaint();
  44.             }
  45.         }
  46. }
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Comment Current Comments
by dk on Thursday, October 8th 2009 at 07:20 AM

how to convert number to word in java script

by dk on Thursday, October 8th 2009 at 07:20 AM

how to convert number to word in java script

by dk on Thursday, October 8th 2009 at 07:20 AM

how to convert number to word in java script

by dk on Thursday, October 8th 2009 at 07:20 AM

how to convert number to word in java script

by dk on Thursday, October 8th 2009 at 07:20 AM

how to convert number to word in java script

by dk on Thursday, October 8th 2009 at 07:20 AM

how to convert number to word in java script

by Jayson on Sunday, October 11th 2009 at 06:22 AM

just put a number with "";
example:
"2"
it is now a string which is a word

by ponti on Wednesday, October 14th 2009 at 02:34 PM


Columns A B C D E F G
Rows 1 17573.87 8466.09 -150.52 173 0.06035773 12.4 6.0%
2 102800.94 69462.66 -957.02 180 0.078214284 7.75%
3 152833.13 109327.87 -1456.45 180 0.082185787 8.25%
4 8428.41 3240.75 -82.76 141 0.060365243 6.0%


Legend :
A - Current Principal Balance
B - Interest Paid Amount
C - Payment Amount
D - Payment Length

E - Computed Interest Rate ( Computed in excel using RATE() with parameters =RATE( D1,C1,A1 ) * F1
F - Contant Number of Months


I have a requirement to get the Interest Rate ( Column E ) using peoplecode in AE. In the above example
data 1-4 derives their Interest Rate ( Column E ) using Rate() in excel. Now I have to simulate it in code
but I can't come-up with a better code formula using vb that will generate the same results as above ( Column E ) they computed
in excel using Rate().

Any Idea?

by janice on Thursday, March 4th 2010 at 02:23 AM

well thought...


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