Transcript
// Fig. 5.6: Interest.java,,
// Calculating compound interest,,
,,
// Java core packages,,
import java.text.NumberFormat;,,
import java.util.Locale;,,
,,
// Java extension packages,,
import javax.swing.JOptionPane;,,
import javax.swing.JTextArea;,,
,,
public class Interest {,,
,,
// main method begins execution of Java application,,
public static void main( String args[] ),,
{,,
double amount, principal = 1000.0, rate = 0.05;
,,
// create DecimalFormat to format floating-point numbers,,
// with two digits to the right of the decimal point,,
NumberFormat moneyFormat = ,,
NumberFormat.getCurrencyInstance( Locale.US );,,
,,
// create JTextArea to display output,,
JTextArea outputTextArea = new JTextArea();,,
,,
// set first line of text in outputTextArea,,
" outputTextArea.setText( ""Year\tAmount on deposit\n"" );",,
,,
// calculate amount on deposit for each of ten years,,
for ( int year = 1; year <= 10; year++ ) {,,
,,
// calculate new amount for specified year,,
amount = principal * Math.pow( 1.0 + rate, year );,
,,
// append one line of text to outputTextArea,,
" outputTextArea.append( year + ""\t"" +",,
" moneyFormat.format( amount ) + ""\n"" );",,
,,
} // end for structure,,
,,
// display results,,
JOptionPane.showMessageDialog( null, outputTextArea,
" ""Compound Interest, JOptionPane.INFORMATION_MESSAGE );
System.exit( 0 ); // terminate the application
} // end method main
} // end class Interest
/**************************************************************************
* (C) Copyright 2002 by Deitel & Associates, Inc. and Prentice Hall. *
* All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
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