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(); 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

}