Need Help To Edit Simple Program Thanks

[klubbhead]

This part of my program needs to read from 4 parameter files and then displays them on the screen by clicking a different radio button. The program itself works, but my professor says that I have to improve the code in the DescriptionPanel 's listener because there are several lines of code that are identical and I should only have them once. Here is the code:


import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.Scanner;


public class DescriptionPanel extends JPanel
{
private JLabel quote;
private JRadioButton Sales, Operations, HR, Technology;
private String title;

public DescriptionPanel()
{
title = " Please click on a job title to get a description of what you are looking for?";

quote = new JLabel (title);
quote.setFont (new Font ("Arial", Font.BOLD, 14));
quote.setForeground (Color.red);

Sales = new JRadioButton ("Sales");
Sales.setFont (new Font ("Helvetica", Font.ITALIC, 14));
Operations = new JRadioButton ("Operations");
Operations.setFont (new Font ("Helvetica", Font.ITALIC, 14));
HR = new JRadioButton ("Human Resources");
HR.setFont (new Font ("Helvetica", Font.ITALIC, 14));
Technology = new JRadioButton ("Technology");
Technology.setFont (new Font ("Helvetica", Font.ITALIC, 14));


ButtonGroup group = new ButtonGroup();
group.add (Sales);
group.add (Operations);
group.add (HR);
group.add (Technology);

QuoteListener listener = new QuoteListener();
Sales.addActionListener (listener);
Operations.addActionListener (listener);
HR.addActionListener (listener);
Technology.addActionListener (listener);






add (Sales);
add (Operations);
add (HR);
add (Technology);

add (quote);

}

//************************************************** ***************
// Represents the listener for all radio buttons
//************************************************** ***************
private class QuoteListener implements ActionListener
{

//--------------------------------------------------------------
// Sets the text of the label depending on which radio
// button was pressed.
//--------------------------------------------------------------
public void actionPerformed (ActionEvent event)
{
Object source = event.getSource();


if (source == Sales)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("sales.txt"));

while (fileScan.hasNext())
title= title + fileScan.nextLine();
quote.setText (title);
}
catch(IOException e)
{
}
}
else

if (source == Operations)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("operations.txt"));

while (fileScan.hasNext())
title = title + fileScan.nextLine();
// quote.setText (title);
}
catch(IOException e)
{
}
}
else


if (source == HR)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("hr.txt"));

while (fileScan.hasNext())
title = title + fileScan.nextLine();
// quote.setText (title);
}
catch(IOException e)
{
}
}

else


if (source == Technology)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("tech.txt"));

while (fileScan.hasNext())
title = title + fileScan.nextLine();
// quote.setText (title);
}
catch(IOException e)
{
}

}
}
}
}

[r035198x]

This part of my program needs to read from 4 parameter files and then displays them on the screen by clicking a different radio button. The program itself works, but my professor says that I have to improve the code in the DescriptionPanel 's listener because there are several lines of code that are identical and I should only have them once. Here is the code:


import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.Scanner;


public class DescriptionPanel extends JPanel
{
private JLabel quote;
private JRadioButton Sales, Operations, HR, Technology;
private String title;

public DescriptionPanel()
{
title = " Please click on a job title to get a description of what you are looking for?";

quote = new JLabel (title);
quote.setFont (new Font ("Arial", Font.BOLD, 14));
quote.setForeground (Color.red);

Sales = new JRadioButton ("Sales");
Sales.setFont (new Font ("Helvetica", Font.ITALIC, 14));
Operations = new JRadioButton ("Operations");
Operations.setFont (new Font ("Helvetica", Font.ITALIC, 14));
HR = new JRadioButton ("Human Resources");
HR.setFont (new Font ("Helvetica", Font.ITALIC, 14));
Technology = new JRadioButton ("Technology");
Technology.setFont (new Font ("Helvetica", Font.ITALIC, 14));


ButtonGroup group = new ButtonGroup();
group.add (Sales);
group.add (Operations);
group.add (HR);
group.add (Technology);

QuoteListener listener = new QuoteListener();
Sales.addActionListener (listener);
Operations.addActionListener (listener);
HR.addActionListener (listener);
Technology.addActionListener (listener);






add (Sales);
add (Operations);
add (HR);
add (Technology);

add (quote);

}

//************************************************** ***************
// Represents the listener for all radio buttons
//************************************************** ***************
private class QuoteListener implements ActionListener
{

//--------------------------------------------------------------
// Sets the text of the label depending on which radio
// button was pressed.
//--------------------------------------------------------------
public void actionPerformed (ActionEvent event)
{
Object source = event.getSource();


if (source == Sales)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("sales.txt"));

while (fileScan.hasNext())
title= title + fileScan.nextLine();
quote.setText (title);
}
catch(IOException e)
{
}
}
else

if (source == Operations)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("operations.txt"));

while (fileScan.hasNext())
title = title + fileScan.nextLine();
// quote.setText (title);
}
catch(IOException e)
{
}
}
else


if (source == HR)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("hr.txt"));

while (fileScan.hasNext())
title = title + fileScan.nextLine();
// quote.setText (title);
}
catch(IOException e)
{
}
}

else


if (source == Technology)
{
try
{
String title = "";
Scanner fileScan = null;

fileScan = new Scanner (new File("tech.txt"));

while (fileScan.hasNext())
title = title + fileScan.nextLine();
// quote.setText (title);
}
catch(IOException e)
{
}

}
}
}
}

 
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.Scanner;
 
public class DescriptionPanel extends JPanel
{
private JLabel quote;
private JRadioButton Sales, Operations, HR, Technology;
private String title;
public DescriptionPanel()
{
title = " Please click on a job title to get a description of what you are looking for?";
quote = new JLabel (title);
quote.setFont (new Font ("Arial", Font.BOLD, 14));
quote.setForeground (Color.red);
 
//There is also a bit of the same code being written over and over again here.
Sales = new JRadioButton ("Sales");
Sales.setFont (new Font ("Helvetica", Font.ITALIC, 14));
Sales.setActionCommand("sales.txt");
Operations = new JRadioButton ("Operations");
Operations.setActionCommand("operations.txt");
Operations.setFont (new Font ("Helvetica", Font.ITALIC, 14));
HR = new JRadioButton ("Human Resources");
HR.setActionCommand("hr.txt");
HR.setFont (new Font ("Helvetica", Font.ITALIC, 14));
Technology = new JRadioButton ("Technology");
Technology.setFont (new Font ("Helvetica", Font.ITALIC, 14));
Technology.setActionCommand("tech.txt");
 
ButtonGroup group = new ButtonGroup();
group.add (Sales);
group.add (Operations);
group.add (HR);
group.add (Technology);
QuoteListener listener = new QuoteListener();
Sales.addActionListener (listener);
Operations.addActionListener (listener);
HR.addActionListener (listener);
Technology.addActionListener (listener);
 
 
 
add (Sales);
add (Operations);
add (HR);
add (Technology);
add (quote);
}
//************************************************** ***************
// Represents the listener for all radio buttons
//************************************************** ***************
private class QuoteListener implements ActionListener
{
//--------------------------------------------------------------
// Sets the text of the label depending on which radio
// button was pressed.
//--------------------------------------------------------------
public void actionPerformed (ActionEvent event) {
 //No need to use if else because we set the action command 'cleverly'.
 String file = event.getActionCommand();
 String title = "";
 Scanner fileScan = null;
 try {
  fileScan = new Scanner (new File(file));
  while (fileScan.hasNext()) {
   title = title + fileScan.nextLine();
  }
 }
 catch(IOException e) {
  e.printStackTrace();//leaving this blank means the exception willbe ignored!
 }
 quote.setText (title);
}
}
}