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Prg 421 Java 2

/*
Week 5: PRG/421
Programmer:
Date:
Program Name: CalculatorChg7.java
Description: SR-mf-003 is a calulator program that provides a GUI for the user to
calculate payment for different mortgage terms. Also allows user to enter
loan amount, and select term and rate from a select menu. Then calculate
loan payment with the results being displayed on a graph chart.

- 7 years at 5.35%
- 15 years at 5.5%
- 30 years at 5.75%
*/

//Java import statements
import java.math.*;
import java.text.NumberFormat;
import java.util.*;
import java.text.DecimalFormat;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.text.*;
import java.lang.*;
import javax.swing.border.*;
import javax.swing.JOptionPane;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.*;
import java.util.StringTokenizer;
import javax.swing.BorderFactory;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.font.*;
import java.awt.Font;
import java.awt.geom.*;
import java.awt.Insets;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.Reader;
import javax.swing.*;

// Create Calculator class

public class Mortgage extends JFrame implements ActionListener
{
public static void main(String[] args)
{
Mortgage frame = new Mortgage();
}
//Declaring fields for GUI
JTextField mortgageAmountField, interestRateField, monthlyPayField;
JFrame myframe;
int buttonCount = 0;
int value = 0;
int myrate = 0;
int term;
int terms [] = {7,15,30};
double trm;
double amt;
double pymt;
double myinterest;
BigDecimal rndpymt;
BigDecimal finalpymt;
String txtpymt;
int months;
double month;
double monthlyInt;
double payment;
double[] interest;...