Project Description You will build part of a college\'s course registration syst

Question

Project Description

You will build part of a college's course registration system (similar to WebReg, though considerably less complex). The system will keep track of a catalog of courses that students can take. It will allow the user (a student) to view and search the course catalog, and to add (register for) and drop (withdraw from) courses.

The following restrictions apply:

All courses meet only once per week, for one class period.

Days will be denoted by the following letters:
M - Monday, T - Tuesday, W - Wednesday, H - Thursday, F - Friday, S - Saturday. There are no Sunday courses.

Class periods (time slots) are numbered from 1 to 9.

A student cannot register for a course that is not in the catalog.

There is a limit on the number of courses a student may take in one semester.

There is NO explicit limit on the number of credits a student may carry in one semester.

A student cannot register for two courses that meet on the same day and time.

Sorting Courses and Analysis (Phase 4)

Implement the following methods in WebReg.java.

DO NOT modify your Period, Course, and Student objects. If needed, you may add helper methods and fields in WebReg.java.

public static Course[] commonCourses(Student one, Student two)

given two students, return a list of all the courses both of the students are taking together in a new array (in any order).

the returned array should be just large enough to hold the results, and no larger; it should not contain any empty (null) entries.

if there are no courses in common, return null.

public static void sortByNumber(Course[] catalog)

sort the catalog into ascending order by department and course number (i.e., courses should be ordered by department number, and courses in the same department should be ordered by individual course number).

you may use any sorting algorithm that you wish.

public static void sortByTime(Course[] catalog)

sort the catalog into chronological order by meeting day and time (i.e., courses should be ordered by the day of week on which they meet, and courses that meet on the same day should be ordered by the class period at which they meet).

you may use any sorting algorithm that you wish.

Submit WebReg.java

Explanation / Answer

import java.awt.*; import java.awt.event.*; import javax.swing.*; public class CoursesRegistration extends JFrame implements ActionListener { JLabel label1, label2, label3, label4, label5, label6, label7, label8; JTextField txtField1, txtField2, txtField3, txtField4, txtField5, txtField6, txtField7, txtField8, txtField9, txtField10, txtField11, txtField12, txtField13, txtField14; JComboBox jcb1, jcb2, jcb3, jcb4, jcb5; JButton butang1, butang2, butang3, butang4; JMenuBar jmb; JMenu file; JMenuItem main, exit, about; private SaveFile data=new SaveFile(); public CoursesRegistration() { super(":::Courses Registration:::"); Container bekas=getContentPane(); bekas.setLayout(new BorderLayout()); jmb=new JMenuBar(); setJMenuBar(jmb); file=new JMenu("File"); jmb.add(file); main=new JMenuItem("Main"); about=new JMenuItem("About"); exit=new JMenuItem("Exit"); file.add(main); file.addSeparator(); file.add(about); file.addSeparator(); file.add(exit); main.addActionListener(this); about.addActionListener(this); exit.addActionListener(this); JPanel panelAtas=new JPanel(); panelAtas.setLayout(new BorderLayout()); JPanel panelAtasKiri=new JPanel(); panelAtasKiri.setLayout(new BorderLayout()); JPanel panelAtasKiriA=new JPanel(); panelAtasKiriA.setLayout(new FlowLayout(FlowLayout.LEFT)); label1=new JLabel("Metric Num "); panelAtasKiriA.add(label1); panelAtasKiri.add(panelAtasKiriA, BorderLayout.NORTH); JPanel panelAtasKiriB=new JPanel(); panelAtasKiriB.setLayout(new FlowLayout(FlowLayout.LEFT)); label2=new JLabel("Name "); panelAtasKiriB.add(label2); panelAtasKiri.add(panelAtasKiriB, BorderLayout.CENTER); JPanel panelAtasKiriC=new JPanel(); panelAtasKiriC.setLayout(new FlowLayout(FlowLayout.LEFT)); label8=new JLabel("Program "); panelAtasKiriC.add(label8); panelAtasKiri.add(panelAtasKiriC, BorderLayout.SOUTH); panelAtas.add(panelAtasKiri, BorderLayout.WEST); JPanel panelAtasTengah=new JPanel(); panelAtasTengah.setLayout(new BorderLayout()); JPanel panelAtasTengahA=new JPanel(); panelAtasTengahA.setLayout(new FlowLayout(FlowLayout.LEFT)); txtField1=new JTextField(6); panelAtasTengahA.add(txtField1); panelAtasTengah.add(panelAtasTengahA, BorderLayout.NORTH); JPanel panelAtasTengahB=new JPanel(); panelAtasTengahB.setLayout(new FlowLayout(FlowLayout.LEFT)); txtField2=new JTextField(25); panelAtasTengahB.add(txtField2); panelAtasTengah.add(panelAtasTengahB, BorderLayout.CENTER); JPanel panelAtasTengahC=new JPanel(); panelAtasTengahC.setLayout(new FlowLayout(FlowLayout.LEFT)); txtField14=new JTextField(10); panelAtasTengahC.add(txtField14); panelAtasTengah.add(panelAtasTengahC, BorderLayout.SOUTH); panelAtas.add(panelAtasTengah, BorderLayout.CENTER); bekas.add(panelAtas, BorderLayout.NORTH); JPanel panelTengah=new JPanel(); panelTengah.setLayout(new BorderLayout()); JPanel panelTengahA=new JPanel(); panelTengahA.setLayout(new GridLayout(7,1)); label3=new JLabel("Course Code "); txtField3=new JTextField(6); txtField4=new JTextField(6); txtField5=new JTextField(6); txtField6=new JTextField(6); txtField7=new JTextField(6); label4=new JLabel(" "); panelTengahA.add(label3); panelTengahA.add(txtField3); panelTengahA.add(txtField4); panelTengahA.add(txtField5); panelTengahA.add(txtField6); panelTengahA.add(txtField7); panelTengahA.add(label4); panelTengah.add(panelTengahA, BorderLayout.WEST); JPanel panelTengahB=new JPanel(); panelTengahB.setLayout(new GridLayout(7,1)); label5=new JLabel("Description", SwingConstants.CENTER); txtField8=new JTextField(6); txtField9=new JTextField(6); txtField10=new JTextField(6); txtField11=new JTextField(6); txtField12=new JTextField(6); label6=new JLabel("Total ", SwingConstants.RIGHT); panelTengahB.add(label5); panelTengahB.add(txtField8); panelTengahB.add(txtField9); panelTengahB.add(txtField10); panelTengahB.add(txtField11); panelTengahB.add(txtField12); panelTengahB.add(label6); panelTengah.add(panelTengahB, BorderLayout.CENTER); JPanel panelTengahC=new JPanel(); panelTengahC.setLayout(new GridLayout(7,1)); label7=new JLabel("Credit Hour "); jcb1=new JComboBox(); jcb1.addItem("0"); jcb1.addItem("1"); jcb1.addItem("2"); jcb1.addItem("3"); jcb2=new JComboBox(); jcb2.addItem("0"); jcb2.addItem("1"); jcb2.addItem("2"); jcb2.addItem("3"); jcb3=new JComboBox(); jcb3.addItem("0"); jcb3.addItem("1"); jcb3.addItem("2"); jcb3.addItem("3"); jcb4=new JComboBox(); jcb4.addItem("0"); jcb4.addItem("1"); jcb4.addItem("2"); jcb4.addItem("3"); jcb5=new JComboBox(); jcb5.addItem("0"); jcb5.addItem("1"); jcb5.addItem("2"); jcb5.addItem("3"); txtField13=new JTextField(6); panelTengahC.add(label7); panelTengahC.add(jcb1); panelTengahC.add(jcb2); panelTengahC.add(jcb3); panelTengahC.add(jcb4); panelTengahC.add(jcb5); panelTengahC.add(txtField13); txtField13.setEditable(false); panelTengah.add(panelTengahC, BorderLayout.EAST); JPanel panelTengahBawah=new JPanel(); panelTengahBawah.setLayout(new FlowLayout()); butang1=new JButton("Save"); butang1.addActionListener(this); butang2=new JButton("Reset"); butang2.addActionListener(this); butang3=new JButton("Search"); butang3.addActionListener(this); butang4=new JButton("Display All Records"); butang4.addActionListener(this); panelTengahBawah.add(butang1); panelTengahBawah.add(butang2); panelTengahBawah.add(butang3); panelTengahBawah.add(butang4); panelTengah.add(panelTengahBawah, BorderLayout.SOUTH); bekas.add(panelTengah, BorderLayout.CENTER); setSize(600,400); setLocation(200,250); setVisible(true); } public static void main(String [] args) { CoursesRegistration frame=new CoursesRegistration(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public void actionPerformed(ActionEvent e) { String metric, nama, prog, code1, code2, code3, code4, code5, desc1, desc2, desc3, desc4, desc5; int total, ch1, ch2, ch3, ch4, ch5; if (e.getSource() == butang1) { boolean betul = true; metric=txtField1.getText(); nama=txtField2.getText(); prog=txtField14.getText(); code1=txtField3.getText(); code2=txtField4.getText(); code3=txtField5.getText(); code4=txtField6.getText(); code5=txtField7.getText(); desc1=txtField8.getText(); desc2=txtField9.getText(); desc3=txtField10.getText(); desc4=txtField11.getText(); desc5=txtField12.getText(); ch1=jcb1.getSelectedIndex(); ch2=jcb2.getSelectedIndex(); ch3=jcb3.getSelectedIndex(); ch4=jcb4.getSelectedIndex(); ch5=jcb5.getSelectedIndex(); total=ch1+ch2+ch3+ch4+ch5; txtField13.setText(String.valueOf(total)); if (total21) { JOptionPane.showMessageDialog(this, "Your total credit hour is over than premited to make a registration", "Error", JOptionPane.ERROR_MESSAGE); } else if (total>=9 && total

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