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Mortgage

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Main Program File Name: mortgage4.java
Programming Language: Java
Main Project Programmer:
Program Version: 1.2
Version Control: 1.2
===================================================================*/

/* BEGIN PROGRAM */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;

import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;

public class mortgage4 extends JFrame implements ActionListener
{
int term = 0;
double principal = 0;
double rate = 0;
double monthlyPayment = 0;
double interest = 0;

//***************Create JPanels and Make JLabels and JTextFields***************
JPanel row1 = new JPanel();
JLabel mortgage_label = new JLabel("My Mortgage Calculator", JLabel.CENTER);

JPanel row2 = new JPanel(new GridLayout(1, 2));
JLabel principal_label = new JLabel("Mortgage Principal $",JLabel.LEFT);
JTextField principal_txt = new JTextField(10);

JPanel row3 = new JPanel(new GridLayout(1, 2));
JLabel term_label = new JLabel("Mortgage Term (Yrs)",JLabel.LEFT);
JTextField term_txt = new JTextField(10);

JPanel row4 = new JPanel(new GridLayout(1, 2));
JLabel rate_label = new JLabel("Interest Rate (%)", JLabel.LEFT);
JTextField rate_txt = new JTextField(10);

JPanel row5 = new JPanel(new...