C:\java\Chapter 8\BillPayer.java:197: missing return statement {
can someone explain this to me? if I add the "{" i get 5 more errors.
/*
Chapter 8Crandall Power & Light
Programmer:
Date: May 11, 2004
Program Name: BillPayer Program Assignments 6
*/
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.text.*;
import java.util.*;
publicclass BillPayerextends JFrameimplements ActionListener
{
//Declare output stream
DataOutputStream output;
//Construct a panel for each row
JPanel firstRow =new JPanel();
JPanel secondRow =new JPanel();
JPanel thirdRow =new JPanel();
JPanel fourthRow =new JPanel();
JPanel fifthRow =new JPanel();
JPanel sixthRow =new JPanel();
JPanel seventhRow =new JPanel();
JPanel eighthRow =new JPanel();
//Construct a panel for the fields and buttons
JPanel fieldPanel =new JPanel();
JPanel buttonPanel =new JPanel();
//Construct labels and text boxes
JLabel acctNumLabel =new JLabel("Account Number: ");
JTextField acctNum =new JTextField(15);
JLabel pmtLabel =new JLabel("Payment Amount:");
JTextField pmt =new JTextField(10);
JLabel firstNameLabel =new JLabel("First Name:");
JTextField firstName =new JTextField(10);
JLabel lastNameLabel =new JLabel("Last Name:");
JTextField lastName =new JTextField(20);
JLabel addressLabel =new JLabel("Address:");
JTextField address =new JTextField(35);
JLabel cityLabel =new JLabel("City:");
JTextField city =new JTextField(10);
JLabel stateLabel =new JLabel("State:");
JTextField state =new JTextField(2);
JLabel zipLabel =new JLabel("Zip:");
JTextField zip =new JTextField(9);
//Construct button
JButton submitButton =new JButton("Submit");
publicstaticvoid main(String[] args)
{
//set the look and feel of the interface
try
{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
}
catch(Exception e)
{
JOptionPane.showMessageDialog(null,"The UIManager could not set the Look and Feel for this application.","Error",JOptionPane.INFORMATION_MESSAGE);
}
BillPayer f =new BillPayer();
f.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE );
f.setSize(450,300);
f.setTitle("Crandall Power and Light Customer Payments");
f.setResizable(false);
f.setLocation(200,200);
f.setVisible(true);
}
public BillPayer()
{
Container c = getContentPane();
c.setLayout((new BorderLayout()));
fieldPanel.setLayout(new GridLayout(8,1));
FlowLayout rowSetup =new FlowLayout(FlowLayout.LEFT,5,3);
firstRow.setLayout(rowSetup);
secondRow.setLayout(rowSetup);
thirdRow.setLayout(rowSetup);
fourthRow.setLayout(rowSetup);
fifthRow.setLayout(rowSetup);
sixthRow.setLayout(rowSetup);
seventhRow.setLayout(rowSetup);
eighthRow.setLayout(rowSetup);
buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
//Add fields to rows
firstRow.add(acctNumLabel);
firstRow.add(pmtLabel);
secondRow.add(acctNum);
secondRow.add(pmt);
thirdRow.add(firstNameLabel);
thirdRow.add(lastNameLabel);
//thirdRow.add(lastNameLabel);
fourthRow.add(firstName);
fourthRow.add(lastName);
fifthRow.add(addressLabel);
sixthRow.add(address);
seventhRow.add(cityLabel);
seventhRow.add(stateLabel);
seventhRow.add(zipLabel);
eighthRow.add(city);
eighthRow.add(state);
eighthRow.add(zip);
//Add rows to panel
fieldPanel.add(firstRow);
fieldPanel.add(secondRow);
fieldPanel.add(thirdRow);
fieldPanel.add(fourthRow);
fieldPanel.add(fifthRow);
fieldPanel.add(sixthRow);
fieldPanel.add(seventhRow);
fieldPanel.add(eighthRow);
//Add button to panel
buttonPanel.add(submitButton);
//Add panels to frame
c.add(fieldPanel, BorderLayout.CENTER);
c.add(buttonPanel, BorderLayout.SOUTH);
//Add functionality to buttons
submitButton.addActionListener(this);
//Get the current date and open the file
try
{
Date today =new Date();
SimpleDateFormat myFormat =new SimpleDateFormat("MMddyyyy");
String filename ="payments" + myFormat.format(today);
output =new DataOutputStream(new FileOutputStream(filename));
}
catch(IOException io)
{
JOptionPane.showMessageDialog(null,"The program could not create a storage location. Please check the disk drive and then run the program again.","Error",JOptionPane.INFORMATION_MESSAGE);
System.exit(1);
}
addWindowListener(
new WindowAdapter()
{
publicvoid windowClosing(WindowEvent e)
{
int answer = JOptionPane.showConfirmDialog(null,"Are you sure you want to exit and submit the file?","File Submission", JOptionPane.YES_NO_OPTION);
if (answer == JOptionPane.YES_OPTION)
System.exit(0);
}
}
);
}
publicvoid actionPerformed(ActionEvent e)
{
String arg = e.getActionCommand();
if (checkFields())
{
try
{
output.writeUTF(acctNum.getText());
output.writeUTF(pmt.getText());
output.writeUTF(firstName.getText());
output.writeUTF(lastName.getText());
output.writeUTF(address.getText());
output.writeUTF(city.getText());
output.writeUTF(state.getText());
output.writeUTF(zip.getText());
JOptionPane.showMessageDialog(null,"The payment information has been saved.","Submission Successful",JOptionPane.INFORMATION_MESSAGE);
}
catch(IOException c)
{
System.exit(1);
}
clearFields();
}
}
publicboolean checkFields()
{
if ((acctNum.getText().compareTo("")==10)||
(pmt.getText().compareTo("")<1)||
(firstName.getText().compareTo("")<1) ||
(lastName.getText().compareTo("")<1) ||
(address.getText().compareTo("")<1)||
(city.getText().compareTo("")<1)||
(state.getText().compareTo("")<1)||
(zip.getText().compareTo("")<1))
{
JOptionPane.showMessageDialog(null,"You must complete all fields.","Data Entry Error",JOptionPane.WARNING_MESSAGE);
returnfalse;
}
}
publicvoid clearFields()
{
//Clear fields and reset the focus
acctNum.setText("");
pmt.setText("");
firstName.setText("");
lastName.setText("");
address.setText("");
city.setText("");
state.setText("");
zip.setText("");
acctNum.requestFocus();
}
}
