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Java Programming Code Examples

Java > Mathematics Code Examples

Calculating compound interest

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Calculating compound interest import java.text.DecimalFormat; import javax.swing.JOptionPane; import javax.swing.JTextArea; public class Interest { public static void main( String args[] ) { double amount, principal = 1000.0, rate = .05; DecimalFormat precisionTwo = new DecimalFormat( "0.00" ); JTextArea outputTextArea = new JTextArea( 11, 20 ); outputTextArea.append( "Year\tAmount on deposit\n" ); for ( int year = 1; year <= 10; year++ ) { amount = principal * Math.pow( 1.0 + rate, year ); outputTextArea.append( year + "\t" + precisionTwo.format( amount ) + "\n" ); } JOptionPane.showMessageDialog( null, outputTextArea, "Compound Interest", JOptionPane.INFORMATION_MESSAGE ); System.exit( 0 ); // terminate the application } }