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Student record using java.awt.event
Posted Date:
Total Responses: 0
Posted By: Mohan Member Level: Silver Points/Cash: 10
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/**
*@title Computer Studies Division Student Information System
*@ver 1.2 (BETA)
*@author Jeshurun Ray Flores
*@since jdk 1.4, jdk 1.5
*/
import java.io.*;
import java.awt.*;
import java.util.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.table.*;
import javax.swing.event.*;
public class StudRec extends ViewElements
{
//main
public static void main(String[] args){
System.out.println("Loading...");
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception e) {}//*/
String title = "Computer Studies Division Academc and Student Information System (BETA)";
JFrame main = new StudRec(title);
Toolkit thKit = main.getToolkit();
Dimension wndSze = thKit.getScreenSize();
main.pack();
int wd = main.getWidth();
int ht = main.getHeight();
int x = (int)((wndSze.getWidth()/2)-(wd/2));
int y = (int)((wndSze.getHeight()/2)-(ht/2));
main.setBounds(x,y,wd,ht);
main.setVisible(true);
main.setResizable(false);
main.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
}
StudRec(String title){
super(title);
System.out.println("setting up user interface\ngathering resources.");
Container cont = getContentPane();
System.out.println("loading tables");
setTabs();
readFiles(); readMisc();
setStudTable();
setSbjTable();
setEnrTable();
setGrdTable();
setLayouts();
cont.add(tabs);
addListeners();
addWindowListener(new winListener());
}
//misc methods
//sets all tabs
private void setTabs(){
String[] titles = {"Student Masterlist","All Classes",
"Enroll Students","Grades","Registrar Settings"};
String[] ttips = {"Create new student.","View classes","Student registration",
"Edit/View Grades","Registrar Settings"};
addTabComponents();
tabs.addTab(titles[0],new ImageIcon("icons/clown.gif"),tab1,ttips[0]);
tabs.addTab(titles[1],new ImageIcon("icons/notes.gif"),tab2,ttips[1]);
tabs.addTab(titles[2],new ImageIcon("icons/files.gif"),tab3,ttips[2]);
tabs.addTab(titles[3],new ImageIcon("icons/pencil.gif"),tab4,ttips[3]);
tabs.addTab(titles[4],new ImageIcon("icons/lock.gif"),tab5,ttips[4]);
}
//adds all components to each tab
private void addTabComponents(){
//tab1
tab1.add(lb1add); tab1.add(lb1cm);
tab1.add(lb1id); tab1.add(tf1id);
tab1.add(lb1nme); tab1.add(tf1ln);
tab1.add(tf1fn); tab1.add(tf1mi);
tab1.add(lb1mn); tab1.add(tf1mn);
tab1.add(bt1rst); tab1.add(bt1ok);
tab1.add(bt1edit); tab1.add(bt1del);
tab1.add(lb1fn); tab1.add(lb1ln);
tab1.add(lb1mi);
tf1id.setEditable(false);
tf1mi.setEditable(false);
//tab2
tab2.add(lb2sbj); tab2.add(cb2maj);
tab2.add(lb2cd); tab2.add(tf2cd);
tab2.add(lb2unt); tab2.add(tf2unt);
tab2.add(lb2desc); tab2.add(tf2desc);
tab2.add(bt2rst); tab2.add(bt2ok);
tab2.add(bt2del); tab2.add(bt2edit);
tab2.add(lb2msg);
//tab3
tab3.add(lb3sbj); tab3.add(bt3add);
tab3.add(bt3op);
bt3op.setEnabled(false);
//tab4
tab4.add(lb4grd);
tab4.add(lb4id); tab4.add(tf4id);
tab4.add(lb4nme); tab4.add(tf4ln);
tab4.add(tf4fn); tab4.add(tf4mi);
tab4.add(lb4crs); tab4.add(tf4crs);
tab4.add(lb4yr); tab4.add(tf4yr);
tab4.add(bt4egrd);
tf4id.setEditable(false); tf4mi.setEditable(false);
tf4ln.setEditable(false); tf4crs.setEditable(false);
tf4yr.setEditable(false); tf4fn.setEditable(false);
//tab5
tab5.add(lb5st);
tab5.add(lb5sy); tab5.add(sr5sy);
tab5.add(lb5sem); tab5.add(cb5sem);
tab5.add(bt5ok);
}
//add listeners to all components in tabs
private void addListeners(){
//buttons
bt1ok.addActionListener(new ButtonListener());
bt1rst.addActionListener(new ButtonListener());
bt1edit.addActionListener(new ButtonListener());
bt1del.addActionListener(new ButtonListener());
bt2ok.addActionListener(new ButtonListener());
bt2rst.addActionListener(new ButtonListener());
bt2edit.addActionListener(new ButtonListener());
bt2del.addActionListener(new ButtonListener());
bt3add.addActionListener(new ButtonListener());
bt3op.addActionListener(new ButtonListener());
bt4egrd.addActionListener(new ButtonListener());
bt5ok.addActionListener(new ButtonListener());
//tables
ListSelectionModel tbModel = tb1stud.getSelectionModel();
tbModel.addListSelectionListener(new StudTableListener());
tbModel = tb2sbj.getSelectionModel();
tbModel.addListSelectionListener(new SubjTableListener());
tbModel = tb3stud.getSelectionModel();
tbModel.addListSelectionListener(new EnrTableListener());
tbModel = tb4grd.getSelectionModel();
tbModel.addListSelectionListener(new GrdTableListener());
//keylisteners
tf1mn.addKeyListener(new KeyboardListener());
}
//file handling routines
//read/write main files
static void writeFiles(){
try{
FileOutputStream outStream;
ObjectOutputStream ooStream;
outStream = new FileOutputStream("StudentList.dat");
ooStream = new ObjectOutputStream(outStream);
ooStream.writeObject(StdList);
ooStream.flush();
outStream.close();
outStream = new FileOutputStream("SemesterList.dat");
ooStream = new ObjectOutputStream(outStream);
ooStream.writeObject(SemList);
ooStream.flush();
outStream.close();
System.out.println("files saved");
}
catch (IOException exc){System.out.println("Error writing file!");}
}
static void readFiles(){
try{
FileInputStream inStream;
ObjectInputStream oiStream;
try{
inStream = new FileInputStream("SemesterList.dat");
oiStream = new ObjectInputStream(inStream);
SemList = (SemesterList)oiStream.readObject();
}
catch(FileNotFoundException exc){
System.out.println("semlist not found.");
sr5sy.setValue(new Integer(2005));
cb5sem.setValue(new Integer(1));
int sy = Integer.parseInt(""+sr5sy.getValue());
int sem = Integer.parseInt(""+cb5sem.getValue());
Semester temp = new Semester(sy,sem);
currentSem = temp;
SemList.put(currentSem.getSemCode(),currentSem);
}
inStream = new FileInputStream("StudentList.dat");
oiStream = new ObjectInputStream(inStream);
StdList = (StudentList)oiStream.readObject();
System.out.println("files reloaded.");
}
catch (FileNotFoundException exc){
System.out.println("File/s not found!");
writeMisc();
}
catch(IOException exc){
System.out.println("Error reading file! Creating new database.");
sr5sy.setValue(new Integer(2005));
cb5sem.setValue(new Integer(1));
int sy = Integer.parseInt(""+sr5sy.getValue());
int sem = Integer.parseInt(""+cb5sem.getValue());
Semester temp = new Semester(sy,sem);
currentSem = temp;
SemList.put(currentSem.getSemCode(),currentSem);
writeMisc();
}
catch(ClassNotFoundException exc){
System.out.println("Class not found.");
}
}
//read/write miscellaneous files
static void writeMisc(){
String settings = Student.getCount()+" ";
String semset = currentSem.getSemCode()+" ";
try{
FileWriter outStream = new FileWriter("misc.inf");
outStream.write(settings+"\n");
outStream.write(semset);
outStream.close();
System.out.println("miscellaneous files saved.");
}
catch(IOException exc){System.out.println("error writing misc file.");}
}
static void readMisc(){
try{
BufferedReader inStream = new BufferedReader(new FileReader("misc.inf"));
int setThis = Integer.parseInt(inStream.readLine().trim());
Student.setInitialCount(setThis);
String semCode = inStream.readLine().trim();
currentSem = (Semester)SemList.get(semCode);
sr5sy.setValue(new Integer(currentSem.getSchoolYear()));
cb5sem.setValue(new Integer(currentSem.getSem()));
System.out.println("miscellaneous files reloaded.");
}
catch(IOException exc){
System.out.println("Error reading misc file");
writeMisc();
}
}
/********** model ***********/
//table models for each table on tabs
public void setStudTable(){
tb1stud = new JTable(new StudModel());
sp1stud = new JScrollPane(tb1stud);
tab1.add(sp1stud);
tb1stud.setPreferredScrollableViewportSize(new Dimension(600,200));
tb1stud.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
bt1edit.setEnabled(false);
bt1del.setEnabled(false);
bt2edit.setEnabled(false);
bt2del.setEnabled(false);
bt4egrd.setEnabled(false);
}
public void setSbjTable(){
tb2sbj = new JTable(new SbjModel());
sp2sbj = new JScrollPane(tb2sbj);
tab2.add(sp2sbj);
tb2sbj.setPreferredScrollableViewportSize(new Dimension(600,220));
tb2sbj.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
}
public void setEnrTable(){
tb3stud = new JTable(new EnrModel());
sp3stud = new JScrollPane(tb3stud);
tab3.add(sp3stud);
tb3stud.setPreferredScrollableViewportSize(new Dimension(755,300));
tb3stud.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
}
public void setGrdTable(){
tb4grd = new JTable(new EnrModel());
sp4grd = new JScrollPane(tb4grd);
tab4.add(sp4grd);
tb4grd.setPreferredScrollableViewportSize(new Dimension(600,200));
tb4grd.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
}
static class StudModel extends AbstractTableModel {
private String[] columnNames = {"ID NUMBER","FAMILY NAME","FIRST NAME"};
private Object[][] data = storeObject();
private Object[][] storeObject(){
Vector vect = StdList.sort();
Object[][] temp = new Object[vect.size()][3];
for(int a=0;a Student temp2 = (Student)vect.elementAt(a);
temp[a][0] = temp2.getIdNumber();
temp[a][1] = temp2.getLastName();
temp[a][2] = temp2.getFirstName();
}
return temp;
}
public Object[][] getData(){
return data;
}
public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return data.length;
}
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
return data[row][col];
}
public boolean isCellEditable(int row, int col) {
return false;
}
}
static class SbjModel extends AbstractTableModel {
private String[] columnNames = {"SUBJECT CODE","SUBJECT DESCRIPTION","UNITS","MAJOR?"};
private Object[][] data = storeObject();
private Object[][] storeObject(){
Hashtable subjects = currentSem.getSubjectsOpen();
Set sKeys = subjects.keySet();
Vector keys = new Vector(sKeys);
Collections.sort(keys);
Object[][] temp = new Object[keys.size()][4];
int a=0;
for(Iterator i=keys.iterator();i.hasNext();a++){
String thisKey = ""+i.next();
Subject temp2 = (Subject)subjects.get(thisKey);
temp[a][0] = temp2.getCode();
temp[a][1] = temp2.getDescription();
temp[a][2] = ""+temp2.getUnits();
if(temp2.isMajor())
temp[a][3] = "YES";
else
temp[a][3] = "NO";
}
return temp;
}
public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return data.length;
}
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
return data[row][col];
}
public boolean isCellEditable(int row, int col) {
return false;
}
}
static class EnrModel extends AbstractTableModel {
private String[] columnNames = {"ID NUMBER","STUDENT NAME","YEAR","COURSE"};
private Object[][] data = storeObject();
private Object[][] storeObject(){
Hashtable students = currentSem.getStudentsEnrolled();
Set sKeys = students.keySet();
Vector keys = new Vector(sKeys);
Collections.sort(keys);
Object[][] temp = new Object[keys.size()][4];
int a=0;
for(Iterator i=keys.iterator();i.hasNext();a++){
String thisKey = ""+i.next();
Student temp2 = (Student)students.get(thisKey);
Person temp3 = new Person(temp2.getFirstName(),
temp2.getLastName(),
temp2.getMiddleName());
temp[a][0] = temp2.getIdNumber();
temp[a][1] = temp3;
temp[a][2] = ""+temp2.getYear();
temp[a][3] = temp2.getCourse();
}
return temp;
}
public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return data.length;
}
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
return data[row][col];
}
public boolean isCellEditable(int row, int col) {
return false;
}
}
/********** controller ***********/
//component listeners
private class ButtonListener implements ActionListener{
public void actionPerformed(ActionEvent e){
//tab1
if(e.getSource()==bt1ok){
String fn = tf1fn.getText().trim().toUpperCase();
String ln = tf1ln.getText().trim().toUpperCase();
String mn = tf1mn.getText().trim().toUpperCase();
Student temp = new Student(fn,ln,mn);
StdList.put(temp.getIdNumber(),temp);
tf1id.setText(temp.getIdNumber());
writeFiles(); readFiles();
writeMisc(); readMisc();
tb1stud.setModel(new StudModel());
System.out.println("new student added to masterlist");
}
if(e.getSource()==bt1rst){
tf1fn.setEditable(true);
tf1ln.setEditable(true);
tf1mn.setEditable(true);
bt1ok.setEnabled(true);
clearTab1();
}
if(e.getSource()==bt1edit){
stddlg = new EditStudentDialog(fmestd,selectedStd);
stddlg.show();
}
if(e.getSource()==bt1del){
StdList.remove(selectedStd.getIdNumber());
writeFiles(); readFiles();
tb1stud.setModel(new StudModel());
System.out.println("student deleted from masterlist.");
}
//tab2
if(e.getSource()==bt2ok){
lb2msg.setText("");
try{
String cd = tf2cd.getText().trim().toUpperCase();
String desc = tf2desc.getText().trim().toUpperCase();
int units = Integer.parseInt(tf2unt.getText().trim());
if(units>0){
Subject temp = new Subject(cd,desc);
if(cb2maj.isSelected())
temp.setAsMajor(true);
else
temp.setAsMajor(false);
temp.setUnits(units);
currentSem.openSubject(temp);
SemList.put(currentSem.getSemCode(),currentSem);
writeFiles(); readFiles();
tb2sbj.setModel(new SbjModel());
cb2maj.setEnabled(true);
System.out.println("new subject opened");
clearTab2();
}
}
catch(NumberFormatException exc){
lb2msg.setText("Please Enter Correct Number of Units.");
}
}
if(e.getSource()==bt2rst){
tb2sbj.clearSelection();
tf2cd.setEditable(true);
tf2desc.setEditable(true);
bt2ok.setEnabled(true);
cb2maj.setEnabled(true);
cb2maj.setSelected(false);
tf2unt.setEditable(true);
clearTab2();
}
if(e.getSource()==bt2edit){
sbjdlg = new EditSubjectDialog(fmesbj,selectedSbj);
sbjdlg.show();
}
if(e.getSource()==bt2del){
currentSem.closeSubject(selectedSbj.getCode());
SemList.put(currentSem.getSemCode(),currentSem);
writeFiles(); readFiles();
tb2sbj.setModel(new SbjModel());
System.out.println("subject deleted.");
}
//tab3
if(e.getSource()==bt3add){
enrdlg = new EnrollDialog(fmnenr);
enrdlg.show();
}
if(e.getSource()==bt3op){
regdlg = new RegistryDialog(fmrreg,selectedStd);
regdlg.show();
}
//tab4
if(e.getSource()==bt4egrd){
grddlg = new GradesDialog(fmggrd,selectedStd);
grddlg.show();
}
//tab5
if(e.getSource()==bt5ok){
writeFiles(); readFiles();
int sy = Integer.parseInt(""+sr5sy.getValue());
int sem = Integer.parseInt(""+cb5sem.getValue());
Semester temp = new Semester(sy,sem);
System.out.println(SemList.containsKey(temp.getSemCode()));
if(SemList.containsKey(temp.getSemCode())){
System.out.println("changing semester");
currentSem = (Semester)SemList.get(temp.getSemCode());
}
else{
System.out.println("openning new semester");
currentSem = temp;
SemList.put(temp.getSemCode(),temp);
}
tb2sbj.setModel(new SbjModel());
tb3stud.setModel(new EnrModel());
tb4grd.setModel(new EnrModel());
writeFiles(); readFiles();
writeMisc(); readMisc();
tabs.setSelectedIndex(2);
System.out.println("semester updated");
}
}
}
private class StudTableListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
if(e.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
if(lsm.isSelectionEmpty()) {
selectedStd=null;
bt1edit.setEnabled(false);
bt1del.setEnabled(false);
}
else {
bt1edit.setEnabled(true);
bt1del.setEnabled(true);
int selectedRow = lsm.getMinSelectionIndex();
StudModel tempMod = new StudModel();
String id = ""+tempMod.getValueAt(selectedRow,0);
selectedStd = (Student)StdList.get(id);
tf1id.setText(id);
tf1fn.setText(selectedStd.getFirstName());
tf1ln.setText(selectedStd.getLastName());
tf1mi.setText(selectedStd.getMiddleInitial());
tf1mn.setText(selectedStd.getMiddleName());
tf1fn.setEditable(false);
tf1ln.setEditable(false);
tf1mn.setEditable(false);
bt1ok.setEnabled(false);
}
}
}
private class SubjTableListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
if(e.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
if(lsm.isSelectionEmpty()) {
selectedSbj=null;
clearTab2();
bt2edit.setEnabled(false);
bt2del.setEnabled(false);
cb2maj.setEnabled(false);
tf2unt.setEditable(false);
}
else {
bt2edit.setEnabled(true);
bt2del.setEnabled(true);
cb2maj.setEnabled(true);
tf2unt.setEditable(true);
int selectedRow = lsm.getMinSelectionIndex();
SbjModel tempMod = new SbjModel();
String code = ""+tempMod.getValueAt(selectedRow,0);
Hashtable SbjList = currentSem.getSubjectsOpen();
selectedSbj = (Subject)SbjList.get(code);
tf2cd.setText(code);
tf2desc.setText(selectedSbj.getDescription());
tf2unt.setText(""+selectedSbj.getUnits());
if(selectedSbj.isMajor())
cb2maj.setSelected(true);
else
cb2maj.setSelected(false);
tf2cd.setEditable(false);
tf2desc.setEditable(false);
cb2maj.setEnabled(false);
bt2ok.setEnabled(false);
tf2unt.setEditable(false);
}
}
}
private class EnrTableListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
if(e.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
if(lsm.isSelectionEmpty()) {
bt3op.setEnabled(false);
}
else {
bt3op.setEnabled(true);
int selectedRow = lsm.getMinSelectionIndex();
EnrModel tempMod = new EnrModel();
String id = ""+tempMod.getValueAt(selectedRow,0);
Hashtable StudList = currentSem.getStudentsEnrolled();
Student temp = (Student)StudList.get(id);
selectedStd = temp;
}
}
}
private class GrdTableListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
if(e.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
if(lsm.isSelectionEmpty()) {
bt4egrd.setEnabled(false);
clearTab4();
}
else {
bt4egrd.setEnabled(true);
int selectedRow = lsm.getMinSelectionIndex();
EnrModel tempMod = new EnrModel();
String id = ""+tempMod.getValueAt(selectedRow,0);
Hashtable ht = currentSem.getStudentsEnrolled();
Student stud = (Student)ht.get(id);
tf4id.setText(stud.getIdNumber());
tf4ln.setText(stud.getLastName());
tf4fn.setText(stud.getFirstName());
tf4mi.setText(stud.getMiddleInitial());
tf4crs.setText(stud.getCourse());
tf4yr.setText(""+stud.getYear());
selectedStd = stud;
}
}
}
private class winListener extends WindowAdapter {
public void windowClosing(WindowEvent we) {
Object[] options = { "YES", "NO" };
int option = JOptionPane.showOptionDialog(null, "Are you sure you want to exit?","EXIT",
JOptionPane.DEFAULT_OPTION, JOptionPane.QUESTION_MESSAGE,
null, options, options[0]);
if (option == JOptionPane.OK_OPTION){
System.out.println("Thank You For Using Me.. :D");
System.exit(0);
}
}
}
private class KeyboardListener implements KeyListener{
public void keyTyped(KeyEvent e){
}
public void keyReleased(KeyEvent e){
try{
String temp = tf1mn.getText();
String temp2 = ""+temp.toUpperCase().charAt(0)+".";
tf1mi.setText(temp2);
}
catch(StringIndexOutOfBoundsException exc){
tf1mi.setText("");
}
}
public void keyPressed(KeyEvent e){
}
}
}
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