A error symbol comes up since StudentOptionsWindow is not a class, can someone m

Question

A error symbol comes up since StudentOptionsWindow is not a class, can someone make it a class that will extend JPanel?

import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.util.Scanner;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.UIManager;

public class TesterClass extends JFrame
{
private Container contents;
private JButton studentButton, administratorButton, enterButton;
private JLabel studentInfo;
private JTextField idInput;
private JPasswordField idInputP;
//lists
private Administrator adminList;
private Students studentList;
private static Library itemList;
//JPanels
private StudentOptionsWindow studentOptionsPanel;
private AdminOptionsPanel adminOptionsPanel;
//
private boolean shouldFill = true, goneBack = false;
private CardLayout cardLayout = new CardLayout();
private JPanel cards = new JPanel(cardLayout);
private JPanel introPanel;
private TesterClass tester;
public static void main(String args[])
throws FileNotFoundException, IOException
{
TesterClass gui = new TesterClass();
Scanner studentDoc = new Scanner(new File("students.txt"));
Scanner adminDoc = new Scanner(new File("administrators.txt"));
Scanner itemDoc = new Scanner(new File("items.txt"));
  
gui.studentList = new Students();
gui.adminList = new Administrator();
gui.itemList = new Library();
  
  
gui.fillStudentsArray(gui.studentList, studentDoc);
gui.fillAdminArray(gui.adminList, adminDoc);
// gui.fillItemArray(itemList, itemDoc);
  
try
{
// serialize(itemList);
deserialize();
}
catch(Exception e)
{
System.out.println("fdasdfa");
}
  
}
  
public TesterClass()
throws FileNotFoundException
{
  
super("Library Application");
  
contents = getContentPane();
introPanel = new JPanel(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
  
tester = this;
if (shouldFill) {
//natural height, maximum width
c.fill = GridBagConstraints.HORIZONTAL;
}
studentButton = new JButton("Student");
studentButton.setBackground(Color.decode("#7ec0ee"));
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 20;
c.weightx = 0.5;
c.gridx = 0;
c.gridy = 0;
introPanel.add(studentButton, c);
  
administratorButton = new JButton("Administrator");
administratorButton.setBackground(Color.decode("#7ec0ee"));
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 20;
c.weightx = 0.5;
c.gridx = 1;
c.gridy = 0;
introPanel.add(administratorButton, c);
  
enterButton = new JButton("");
enterButton.setBackground(Color.decode("#98ff98"));
idInputP = new JPasswordField(0);
  
//Add labels after selection
studentInfo = new JLabel("");
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 20; //make this component tall
c.weightx = 1.0;
c.gridwidth = 3;
c.gridx = 0;
c.gridy = 1;
introPanel.add(studentInfo, c);
  
  
ButtonHandler bh = new ButtonHandler();
studentButton.addActionListener(bh);
administratorButton.addActionListener(bh);
enterButton.addActionListener(bh);
  
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 20; //make this component tall
c.weightx = 0.5;
c.gridx = 0;
c.gridy = 5;
  
introPanel.setBackground(Color.white);
//Add all the cards to cardLayout!!!-------------
cards.add(introPanel, "intro");
contents.add(cards);
setSize(300, 300);
setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
  
private class ButtonHandler implements ActionListener
{
boolean studentButtonPressed, adminButtonPressed;
public void actionPerformed(ActionEvent action)
{
GridBagConstraints c = new GridBagConstraints();
if(action.getSource() == studentButton)
{
adminButtonPressed = false;
studentInfo.setText("Please enter your Student I.D.");
  
//add the input option
idInputP.setColumns(10);
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 40; //make this component tall
c.weightx = 0.0;
c.gridwidth = 3;
c.gridx = 0;
c.gridy = 2;
introPanel.add(idInputP, c);
  
enterButton.setText("Enter");
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 20; //make this component tall
c.weightx = 0.0;
c.gridwidth = 3;
c.gridx = 0;
c.gridy = 3;
introPanel.add(enterButton, c);
studentButtonPressed = true;
}
  
if(action.getSource() == administratorButton)
{
studentButtonPressed = false;
studentInfo.setText("Please enter your Administrator I.D.");
  
//add the input option
idInputP.setColumns(10);
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 40; //make this component tall
c.weightx = 0.0;
c.gridwidth = 3;
c.gridx = 0;
c.gridy = 2;
introPanel.add(idInputP, c);

  
enterButton.setText("Enter");
c.fill = GridBagConstraints.HORIZONTAL;
c.ipady = 20; //make this component tall
c.weightx = 0.0;
c.gridwidth = 3;
c.gridx = 0;
c.gridy = 3;
introPanel.add(enterButton, c);
adminButtonPressed = true;
}
  
if(action.getSource() == enterButton)
{
String id = idInputP.getText();
  
if(goneBack == true)
{
try
{
serialize(itemList);
}
catch(Exception e)
{
System.out.println("fdasdfa");
}
  
  
enterButton.setText("Enter");
}
  
if(studentList.searchStudent(id) && studentButtonPressed == true && goneBack == false)
{
studentOptionsPanel = new StudentOptionsWindow (studentList.getStudentArray().get(studentList.getIndexofMatch(id)));
cards.add(studentOptionsPanel, "studentOption");
studentOptionsPanel.itemList = itemList;
studentOptionsPanel.currentStudent = studentList.getStudentArray().get(studentList.getIndexofMatch(id));
studentOptionsPanel.setTester(tester);
swapView("studentOption");
setSize(400, 400);
idInputP.setText("");
enterButton.setText("Save");
goneBack = true;
  
  
}
  
  
else if(adminList.searchAdmin(id) && adminButtonPressed == true && goneBack == false)
{
adminOptionsPanel = new AdminOptionsPanel();
cards.add(adminOptionsPanel, "adminOption");
adminOptionsPanel.itemList = itemList;
adminOptionsPanel.studentList = studentList;
adminOptionsPanel.setTester(tester);
swapView("adminOption");
setSize(400, 400);
idInputP.setText("");
goneBack = true;
enterButton.setText("Save");
}
else
{
JOptionPane error = new JOptionPane();
if(goneBack == false)error.showMessageDialog(null, "Invalid ID");
if(goneBack == true)error.showMessageDialog(null, "Data Saved");
goneBack = false;
idInputP.setText("");
}
}
}
}
  
public void fillStudentsArray(Students studentList, Scanner studentDoc)
throws FileNotFoundException
{
String line= "", name = "", lastName = "", id = "", email = "", phone = "";
while(studentDoc.hasNextLine())
{
line = studentDoc.nextLine();
Scanner currentLine = new Scanner(line);
while(currentLine.hasNext())
{
name = currentLine.next();
lastName = currentLine.next();
id = currentLine.next();
email = currentLine.next();
phone = currentLine.next();
studentList.add(new Student(new Person(name, lastName, id,email ,phone ))) ;
}
}
}
  

public void fillAdminArray(Administrator adminList, Scanner studentDoc)
throws FileNotFoundException
{
String line= "", name = "", lastName = "", id = "", email = "", phone = "";
while(studentDoc.hasNextLine())
{
line = studentDoc.nextLine();
Scanner currentLine = new Scanner(line);
while(currentLine.hasNext())
{
name = currentLine.next();
lastName = currentLine.next();
id = currentLine.next();
email = currentLine.next();
phone = currentLine.next();
adminList.add(new Person(name, lastName, id,email ,phone )) ;
}
}
}
  
public void fillItemArray(Library itemList, Scanner itemDoc)
{
String line = "", title = "", subject = "", author = "", publisher = "", yearPublished = "", type = "";
boolean status;
while(itemDoc.hasNextLine())
{
line = itemDoc.nextLine();
Scanner currentLine = new Scanner(line);
currentLine.useDelimiter(",");
  
title = currentLine.next();
subject = currentLine.next();
author = currentLine.next();
publisher = currentLine.next();
yearPublished = currentLine.next();
status = Boolean.parseBoolean(currentLine.next());
type = currentLine.next();
itemList.add(new Item(title, subject, author, publisher , yearPublished, status, type )) ;
}
  
}//end of fill item array
  
public static void serialize(Library p) throws Exception {
ObjectOutputStream cout = null;
try
{
  
OutputStream outputFile =
new FileOutputStream( "Serialized" );
//object output stream allows you to output an object as a whole
cout = new ObjectOutputStream( outputFile );
cout.writeObject(p);
}
catch ( IOException ioException )
{
System.err.println( "****Error opening file." );
}

cout.close();
}

public static void deserialize() throws Exception {
// p= new ArrayList<Person>();
InputStream inputFile =
new FileInputStream( "Serialized" );
ObjectInputStream cin =
new ObjectInputStream( inputFile );
  
  
itemList =(Library) cin.readObject() ;
//p.sort();
// System.out.println(p);
boolean morePass =true;
for (int i=1; i<itemList.getSize() && morePass; i++)
morePass= false;
for(int j=0; j<(itemList.getSize()-1); j++)
{
if (itemList.getItemArray().get(j).compareTo(itemList.getItemArray().get(j+1)))
{
Item p1 = itemList.getItemArray().get(j);
Item p2 = itemList.getItemArray().get(j+1);
itemList.add(p1) ;
itemList.add(p2) ;
morePass = true;
}
}
  
// System.out.println(p);
  
}
  
public void swapView(String key)
{
cardLayout.show(cards, key);
}
  
public JPanel getCards()
{
return cards;
}
  

}

Explanation / Answer

Hi, please provide complete code. Here you are missing students, administrator classes which are essential to resolve the error. Please provide those classes also. I will resolve the error.

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