// @topic T11716 MVC Demo - Account Balance
// @brief Main Window extends JFrame <a href="http://www.c-jump.com/bcc/c257c/c257jsample/junk/wk10_banking/MainWindow.form"><tt>MainWindow.form</tt></a>. NetBeans project: <a href="http://www.c-jump.com/bcc/c257c/c257jsample/junk/Week10_banking.zip"><tt>Week10_banking.zip</tt></a>
package banking;
public class MainWindow extends javax.swing.JFrame {
// data attributes
ControllerTransaction controller;
// constructors
public MainWindow( ControllerTransaction controller ) {
this.controller = controller;
initComponents();
}
//operations
public void updateBalance( double balance )
{
txtAmount.setText(""+balance);
}
/**
* 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")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
pnlMain = new javax.swing.JPanel();
lblAmount = new javax.swing.JLabel();
txtAmount = new javax.swing.JTextField();
btnDeposit = new javax.swing.JButton();
btnWithdraw = new javax.swing.JButton();
btnBalance = new javax.swing.JButton();
lblStatus = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Banking Demo");
lblAmount.setText("Amount:");
btnDeposit.setText("Deposit");
btnDeposit.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnDepositActionPerformed(evt);
}
});
btnWithdraw.setText("Withdraw");
btnWithdraw.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnWithdrawActionPerformed(evt);
}
});
btnBalance.setText("Balance");
btnBalance.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnBalanceActionPerformed(evt);
}
});
javax.swing.GroupLayout pnlMainLayout = new javax.swing.GroupLayout(pnlMain);
pnlMain.setLayout(pnlMainLayout);
pnlMainLayout.setHorizontalGroup(
pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(pnlMainLayout.createSequentialGroup()
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(pnlMainLayout.createSequentialGroup()
.addGap(51, 51, 51)
.addComponent(lblAmount)
.addGap(18, 18, 18)
.addComponent(txtAmount, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(pnlMainLayout.createSequentialGroup()
.addGap(30, 30, 30)
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(pnlMainLayout.createSequentialGroup()
.addComponent(lblStatus, javax.swing.GroupLayout.PREFERRED_SIZE, 210, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(pnlMainLayout.createSequentialGroup()
.addComponent(btnDeposit)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(btnWithdraw)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 15, Short.MAX_VALUE)
.addComponent(btnBalance)))))
.addContainerGap())
);
pnlMainLayout.setVerticalGroup(
pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(pnlMainLayout.createSequentialGroup()
.addGap(56, 56, 56)
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lblAmount)
.addComponent(txtAmount, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(43, 43, 43)
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnDeposit)
.addComponent(btnWithdraw)
.addComponent(btnBalance))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 39, Short.MAX_VALUE)
.addComponent(lblStatus)
.addGap(24, 24, 24))
);
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(pnlMain, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(108, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(pnlMain, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(84, Short.MAX_VALUE))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void btnWithdrawActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnWithdrawActionPerformed
String strAmount = txtAmount.getText();
try {
// perform basic valdations:
double amount = Double.parseDouble(strAmount);
if ( amount < 0.01 ) {
throw new RuntimeException("positive amount expected");
}
controller.makeWithdrawal(amount);
lblStatus.setText("Everything is OK");
} catch ( NumberFormatException ex ) {
// handle the bad input error
lblStatus.setText("bad number format");
} catch ( RuntimeException ex ) {
// handle the overdraft error
lblStatus.setText(ex.getMessage());
}
}//GEN-LAST:event_btnWithdrawActionPerformed
private void btnDepositActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnDepositActionPerformed
// TODO add your handling code here:
}//GEN-LAST:event_btnDepositActionPerformed
private void btnBalanceActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnBalanceActionPerformed
controller.checkBalance();
}//GEN-LAST:event_btnBalanceActionPerformed
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
Account account = new Account( 100.00 ); // hardcoded for demo
ControllerTransaction controller = new ControllerTransaction( account );
MainWindow window = new MainWindow( controller );
WindowAccountBalance balanceWindow = new WindowAccountBalance(controller);
controller.setMainWindow(window);
controller.setBalanceWindow(balanceWindow);
window.setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton btnBalance;
private javax.swing.JButton btnDeposit;
private javax.swing.JButton btnWithdraw;
private javax.swing.JLabel lblAmount;
private javax.swing.JLabel lblStatus;
private javax.swing.JPanel pnlMain;
private javax.swing.JTextField txtAmount;
// End of variables declaration//GEN-END:variables
}