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action event or action listener

1 reply [Last post]
adrianhdz
Offline
Joined: 2008-07-04

Hello Everyone,

I need help with a school project, the project is a mortgage calculator I got the gui portion and some of the code working. I would to see if you can help me to incorporate the calculation formula with the rest of the code. I am very lost, any help is greatly appreciated. Here is the code

[code]
/*
* MortgageCalculator3UI.java
*
* Created on July 4, 2008, 11:35 AM
*/

package my.MortgageCalculator3;

/**
*
* @author Adrian Hernandez
*/
public class MortgageCalculator3UI extends javax.swing.JFrame {

/** Creates new form MortgageCalculator3UI */
public MortgageCalculator3UI() {
initComponents();
}

/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
//
private void initComponents() {

jSeparator1 = new javax.swing.JSeparator();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jComboBox1 = new javax.swing.JComboBox();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenuItem2 = new javax.swing.JMenuItem();
jMenuItem3 = new javax.swing.JMenuItem();
jMenuItem4 = new javax.swing.JMenuItem();
jMenuItem5 = new javax.swing.JMenuItem();
jMenuItem6 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenuItem7 = new javax.swing.JMenuItem();
jMenuItem8 = new javax.swing.JMenuItem();
jMenuItem9 = new javax.swing.JMenuItem();
jMenuItem10 = new javax.swing.JMenuItem();
jMenu3 = new javax.swing.JMenu();
jMenuItem11 = new javax.swing.JMenuItem();
jMenuItem12 = new javax.swing.JMenuItem();
jMenuItem13 = new javax.swing.JMenuItem();
jMenu4 = new javax.swing.JMenu();
jMenuItem15 = new javax.swing.JMenuItem();
jMenuItem14 = new javax.swing.JMenuItem();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Mortgage Options", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 11))); // NOI18N

jLabel1.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
jLabel1.setText("Loan Amount");

jLabel2.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
jLabel2.setText("Preset Term and Interest Rate");

jLabel3.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
jLabel3.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
jLabel3.setText("Term (Years)");

jLabel4.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
jLabel4.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
jLabel4.setText("Interest Rate");

jTextField1.setBackground(new java.awt.Color(204, 204, 255));
jTextField1.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(0, 0, 0), 2, true));

jTextField3.setBackground(new java.awt.Color(204, 204, 255));
jTextField3.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(0, 0, 0), 2, true));

jTextField4.setBackground(new java.awt.Color(204, 204, 255));
jTextField4.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(0, 0, 0), 2, true));
jTextField4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField4ActionPerformed(evt);
}
});

jTable1.setBackground(new java.awt.Color(204, 204, 255));
jTable1.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(0, 0, 0), 2, true));
jTable1.setModel(new javax.swing.table.DefaultTableModel(
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},
new String [] {
"Payment #", "Payment", "Interest", "Principle", "Balance"
}
));
jTable1.setRequestFocusEnabled(false);
jScrollPane1.setViewportView(jTable1);

jButton1.setText("Calculate");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setText("Reset");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jButton3.setText("End");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});

jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Preset Term and Interest Rate", "7 Years at 5.35%", "15 Years at 5.5%", "30 Years at 5.75%" }));
jComboBox1.setAutoscrolls(true);
jComboBox1.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(0, 0, 0), 2, true));
jComboBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jComboBox1ActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 533, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, 323, Short.MAX_VALUE)
.addComponent(jLabel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 323, Short.MAX_VALUE)
.addComponent(jLabel4, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 323, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, 323, Short.MAX_VALUE))))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(103, 103, 103)
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField3, javax.swing.GroupLayout.DEFAULT_SIZE, 210, Short.MAX_VALUE)
.addComponent(jTextField4, javax.swing.GroupLayout.DEFAULT_SIZE, 210, Short.MAX_VALUE)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 210, Short.MAX_VALUE)
.addComponent(jComboBox1, 0, 210, Short.MAX_VALUE)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(21, 21, 21)
.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)))))
.addContainerGap())
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(233, 233, 233)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(245, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 26, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4))
.addGap(31, 31, 31)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton2)
.addComponent(jButton1)
.addComponent(jButton3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 38, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 285, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);

jMenu1.setText("File");

jMenuItem1.setText("New");
jMenu1.add(jMenuItem1);

jMenuItem2.setText("Open");
jMenu1.add(jMenuItem2);

jMenuItem3.setText("Save");
jMenu1.add(jMenuItem3);

jMenuItem4.setText("Save As");
jMenu1.add(jMenuItem4);

jMenuItem5.setText("Print");
jMenu1.add(jMenuItem5);

jMenuItem6.setText("Exit");
jMenuItem6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem6ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem6);

jMenuBar1.add(jMenu1);

jMenu2.setText("Edit");

jMenuItem7.setText("Cut");
jMenu2.add(jMenuItem7);

jMenuItem8.setText("Copy");
jMenu2.add(jMenuItem8);

jMenuItem9.setText("Paste");
jMenu2.add(jMenuItem9);

jMenuItem10.setText("Delete");
jMenu2.add(jMenuItem10);

jMenuBar1.add(jMenu2);

jMenu3.setText("Options");

jMenuItem11.setText("7 Years");
jMenu3.add(jMenuItem11);

jMenuItem12.setText("15 Years");
jMenu3.add(jMenuItem12);

jMenuItem13.setText("30 Years");
jMenu3.add(jMenuItem13);

jMenuBar1.add(jMenu3);

jMenu4.setText("Windows");
jMenu4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu4ActionPerformed(evt);
}
});

jMenuItem15.setText("Manual");
jMenuItem15.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem15ActionPerformed(evt);
}
});
jMenu4.add(jMenuItem15);

jMenuItem14.setText("Pre-define");
jMenuItem14.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem14ActionPerformed(evt);
}
});
jMenu4.add(jMenuItem14);

jMenuBar1.add(jMenu4);

setJMenuBar(jMenuBar1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
);

pack();
}//

private void jMenuItem6ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}

private void jTextField4ActionPerformed(java.awt.event.ActionEvent evt) {
jTextField1.setText("");
jTextField3.setText("");
jTextField4.setText("");
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
jTextField1.setText("");
jTextField3.setText("");
jTextField4.setText("");
}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}

//Formula
calculate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
// calculate the payment to be paid monthly
double p=Double.parseDouble(amount.getText());
double r=Double.parseDouble(rate.getText())/12;
double n=Integer.parseInt(term.getText())*12;
double monthlyPayment=p*Math.pow(1+r,n)*r/(Math.pow(1+r,n)-1);
DecimalFormat df = new DecimalFormat("$###,###.00"); //my beloved decimal format that gave me issues
payment.setText(df.format(monthlyPayment));
// calculate the details of the loan, principal, interest, balance, etc.
double principal=p;
int month;
StringBuffer buffer=new StringBuffer();
buffer.append("Month\tAmount\tInterest\tBalance\n");
for (int i=0; i

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pelz
Offline
Joined: 2008-06-08

And what is the problem?