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FIGURE 32-6
The RemBal
applet
// Find the remaining balance on a loan.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.text.*;
/*
<applet code="RemBal" width=340 height=260>
</applet>
*/
public class RemBal extends JApplet
implements ActionListener {
JTextField orgPText, paymentText, remBalText,
rateText, numPayText;
JButton doIt;
double
orgPrincipal;
//
original principal
double
intRate;
//
interest rate
double
payment;
//
amount of each payment
double
numPayments;
//
number of payments made
/* Number of payments per year. You could
allow this value to be set by the user. */
final int payPerYear = 12;
NumberFormat nf;
public void init() {
try {
SwingUtilities.invokeAndWait(new Runnable () {
public void run() {
makeGUI(); // initialize the GUI
}
});
} catch(Exception exc) {
System.out.println("Can't create because of "+ exc);
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