Any help with this code would be appreciated. import java.awt.event.ActionEvent;

Question

Any help with this code would be appreciated.

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

/**
* The View class implements the GUI.
*/
public class View extends JFrame implements ActionListener {

    public static final int FRAME_WIDTH = 500;
    public static final int FRAME_HEIGHT = 250;

    // Declare instance variables
    ???

    /**
     * View()
     *
     * The View constructor creates the GUI interface and makes the frame visible at the end.
     */
    public View(Main pMain) {

        // Save a reference to the Main object pMain in mMain.
        ???

        // PSEUDOCODE:
        // Create a JPanel named panelSearch which uses the FlowLayout.
        // Add a JLabel "Student Name: " to panelSearch
        // Create mSearchText and make the field 25 cols wide
        // Add mSearchText to the panel
        // Create mSearchButton
        // Make this View the action listener for the button
        // Add the button to the panel
        ???

        // PSEUDOCODE:
        // Create a JPanel named panelHomework which uses the FlowLayout.
        // Add a JLabel "Homework: " to the panel
        // Create mHomeworkText which is an array of CourseConstants.NUM_HOMEWORKS JTextFields
        // For i = 0 to CourseConstants.NUM_HOMEWORKS - 1 Do
        //     Create textfield mHomeworkText[i] displaying 5 cols
        //     Add mHomeworkText[i] to the panel
        // End For
        ???

        // Create the exam panel which contains the "Exam: " label and the two exam text fields.
      // The pseudocode is omitted because this code is very similar to the code that creates
      // the panelHomework panel.
        ???

        // PSEUDOCODE:
        // Create a JPanel named panelButtons using FlowLayout.
        // Create the Clear button mClearButton.
        // Make this View the action listener for mClearButton.
        // Add the Clear button to the panel.
        // Repeat the three above statements for the Save button.
        // Repeat the three above statements for the Exit button.
        ???

        // PSEUDOCODE:
        // Create a JPanel named panelMain using a vertical BoxLayout.
        // Add panelSearch to panelMain.
        // Add panelHomework to panelMain.
        // Add panelExam to panelMain.
        // Add panelButtons to panelMain.
        ???

        // Initialize the remainder of the frame, add the main panel to the frame,
      // and make the frame visible.
        setTitle("Gradebookulator");
        setSize(FRAME_WIDTH, FRAME_HEIGHT);
        setResizable(false);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        add(panelMain);
        setVisible(true);
    }

    /**
     * actionPerformed()
     *
     * Called when one of the JButtons is clicked. Detects which button was clicked and handles it.
     *
     * PSEUDOCOODE:
     * If the source of the event was the Search button Then
     *     lastName = retrieve the text from the mSearchText text field.
     *     If lastName is the empty string Then
     *         Call messageBox() to display "Please enter the student's last name."
     *     Else
     *         student = Call mMain.search(lastName)
     *         If student is null Then
     *             Call messageBox() to display "Student not found. Try again."
     *         Else
     *             Call displayStudent(student)
     *         End if
     *     End If
     * Else if the source of the event was the Save button Then
     *     If mStudent is not null Then Call saveStudent(mStudent)
     * Else if the source of the event was the Clear button Then
     *     Call clear()
     * Else if the source of the event was the Exit button Then
     *     If mStudent is not null Then Call saveStudent(mStudent)
     *     Call mMain.exit() to terminate the application
     * End If
     */
    ???

    /**
     * clear()
     *
     * Called when the Clear button is clicked. Clears all of the text fields by setting the contents to the empty string.
     * After clear() returns, no student information is being edited or displayed.
     *
     * PSEUDOCODE:
     * Set the mSearchText text field to ""
     * Set each of the homework text fields to ""
     * Set each of the exam text fields to ""
     * Set the mStudent reference to null
     */
    ???

    /**
     * displayStudent()
     *
     * Displays the homework and exam scores for a student in the mHomeworkText and mExamText text fields.
     *
     * PSEUDOCODE:
     * For i = 0 to CourseConstants.NUM_HOMEWORKS - 1 Do
     *     int hw = pStudent.getHomework(i)
     *     String hwstr = convert hw to a String (Hint: Integer.toString())
     *     mHomeworkText[i].setText(hwstr)
     * End For
     * Write another for loop similar to the one above to place the exams scores into the text fields
     */
    ???

    /**
     * messageBox()
     *
     * Displays a message box containing some text.
     */
    public void messageBox(String pMessage) {
        JOptionPane.showMessageDialog(this, pMessage, "Message", JOptionPane.PLAIN_MESSAGE);
    }

    /**
     * saveStudent()
     *
     * Retrieves the homework and exam scores for pStudent from the text fields and writes the results to the Student record
     * in the Roster.
     *
     * PSEUDOCODE:
     * For i = 0 to CourseConstants.NUM_HOMEWORKS - 1 Do
     *     String hwstr = mHomeworkText[i].getText()
     *     int hw = convert hwstr to an int (Hint: Integer.parseInt())
     *     Call pStudent.setHomework(i, hw)
     * End For
     * Write another for loop similar to the one above to save the exam scores
     */
    ???

}

Explanation / Answer

comment if you have any doubts.

Question is too big to be a single one. Heres the code without the method implementation (only variables and fields instantiated)

Post another question if you want methods also.

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

/**
* The View class implements the GUI.
*/
public class View extends JFrame implements ActionListener {

public static final int FRAME_WIDTH = 500;
public static final int FRAME_HEIGHT = 250;

// Declare instance variables
private JButton mClearButton,mExitButton,mSaveButton,mSearchButton;
private JTextField[] mExamText,mHomeworkText;
private JTextField mSearchText;
private Main mMain;
private Student mStudent;

/**
* View()
*
* The View constructor creates the GUI interface and makes the frame visible at the end.
*/
public View(Main pMain) {

// Save a reference to the Main object pMain in mMain.
   mMain=pMain;
  
// PSEUDOCODE:
// Create a JPanel named panelSearch which uses the FlowLayout.
// Add a JLabel "Student Name: " to panelSearch
// Create mSearchText and make the field 25 cols wide
// Add mSearchText to the panel
// Create mSearchButton
// Make this View the action listener for the button
// Add the button to the panel
   JPanel panelSearch=new JPanel(new FlowLayout());
   panelSearch.add(new JLabel("Student Name: "));
   mSearchText=new JTextField(25);
   panelSearch.add(mSearchText);
   mSearchButton=new JButton("Search");
   mSearchButton.addActionListener(this);
   panelSearch.add(mSearchButton);
  
// PSEUDOCODE:
// Create a JPanel named panelHomework which uses the FlowLayout.
// Add a JLabel "Homework: " to the panel
// Create mHomeworkText which is an array of CourseConstants.NUM_HOMEWORKS JTextFields
// For i = 0 to CourseConstants.NUM_HOMEWORKS - 1 Do
// Create textfield mHomeworkText[i] displaying 5 cols
// Add mHomeworkText[i] to the panel
// End For
JPanel panelHomework=new JPanel(new FlowLayout());
panelHomework.add(new JLabel("Homework: "));
mHomeworkText=new JTextField[CourseConstants.NUM_HOMEWORKS];
for(int i=0;i<CourseConstants.NUM_HOMEWORKS;i++)
{
   mHomeworkText[i]=new JTextField(5);
   panelHomework.add(mHomeworkText[i]);
}

// Create the exam panel which contains the "Exam: " label and the two exam text fields.
// The pseudocode is omitted because this code is very similar to the code that creates
// the panelHomework panel.
JPanel panelExam=new JPanel(new FlowLayout());
panelExam.add(new JLabel("Exam: "));
mExamText=new JTextField[2];
for(int i=0;i<2;i++)
{
   mExamText[i]=new JTextField(5);
   panelExam.add(mExamText[i]);
}

// PSEUDOCODE:
// Create a JPanel named panelButtons using FlowLayout.
// Create the Clear button mClearButton.
// Make this View the action listener for mClearButton.
// Add the Clear button to the panel.
// Repeat the three above statements for the Save button.
// Repeat the three above statements for the Exit button.
JPanel panelButtons=new JPanel(new FlowLayout());
mClearButton = new JButton("Clear");
mClearButton.addActionListener(this);
panelButtons.add(mClearButton);
  
mSaveButton = new JButton("Save");
mSaveButton.addActionListener(this);
panelButtons.add(mSaveButton);
  
mExitButton = new JButton("Exit");
mExitButton.addActionListener(this);
panelButtons.add(mExitButton);

// PSEUDOCODE:
// Create a JPanel named panelMain using a vertical BoxLayout.
// Add panelSearch to panelMain.
// Add panelHomework to panelMain.
// Add panelExam to panelMain.
// Add panelButtons to panelMain.
JPanel panelMain=new JPanel(new BoxLayout(this,BoxLayout.Y_AXIS));
panelMain.add(panelSearch);
panelMain.add(panelHomework);
panelMain.add(panelExam);
panelMain.add(panelButtons);

// Initialize the remainder of the frame, add the main panel to the frame,
// and make the frame visible.
setVisible(true);
setTitle("Gradebookulator");
setSize(FRAME_WIDTH, FRAME_HEIGHT);
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
add(panelMain);
setVisible(true);
}

}

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