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Added csv support for better accessibility #1

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Added csv support for better accessibility #1

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11 changes: 11 additions & 0 deletions .project
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Original file line number Diff line number Diff line change
Expand Up @@ -14,4 +14,15 @@
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
<filteredResources>
<filter>
<id>1712506907498</id>
<name></name>
<type>30</type>
<matcher>
<id>org.eclipse.core.resources.regexFilterMatcher</id>
<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
</matcher>
</filter>
</filteredResources>
</projectDescription>
182 changes: 79 additions & 103 deletions Delete.java
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Expand Up @@ -7,167 +7,143 @@
import java.util.*;
import static javax.swing.JOptionPane.showMessageDialog;

public class Delete extends JFrame implements ActionListener
{
public class Delete extends JFrame implements ActionListener {
private JLabel usnL;
private JTextField usnT;
private JButton delete,back;

Container con=null;
String usn="";
private JButton delete, back;

Delete()
{
Container con = null;

Delete() {
super("Delete Record");
con = getContentPane();
con.setLayout(null);
Color lightBlue = new Color(0,255,255);
Color lightBlue = new Color(0, 255, 255);
con.setBackground(lightBlue);

con.setSize(300,300);
con.setSize(300, 300);
con.setLayout(null);
con.setVisible(true);

Font font = new Font("Verdana", Font.BOLD, 16);

Color blue = new Color(30,144,255);
usnL=new JLabel("Enter USN of record to be deleted");
usnL.setBounds(400, 50, 700,150);
Color blue = new Color(30, 144, 255);
usnL = new JLabel("Enter USN of record to be deleted");
usnL.setBounds(400, 50, 700, 150);
usnL.setFont(font);
usnL.setForeground(Color.BLACK);

usnT=new JTextField(200);
usnT.setBounds(725,100,250,50);
usnT = new JTextField(200);
usnT.setBounds(725, 100, 250, 50);
usnT.setFont(font);
usnT.setForeground(Color.BLACK);

delete = new JButton("Delete");
delete.setBounds(400,600,150,40);
delete.addActionListener(this);
delete.setBounds(400, 600, 150, 40);
delete.addActionListener(this);
delete.setFont(font);
Color pul = new Color(0,0,255);
Border bored = BorderFactory.createLineBorder(pul,5);
Color pul = new Color(0, 0, 255);
Border bored = BorderFactory.createLineBorder(pul, 5);
delete.setBorder(bored);
delete.setForeground(Color.WHITE);
delete.setBackground(blue);

back = new JButton("Go Back");
back.setBounds(600,600,150,40);
back.addActionListener(this);
back.setBounds(600, 600, 150, 40);
back.addActionListener(this);
back.setFont(font);
back.setBorder(bored);
back.setForeground(Color.WHITE);
back.setBackground(blue);


con.add(usnL);
con.add(usnT);
con.add(usnT);
con.add(delete);
con.add(back);
}

public void actionPerformed(ActionEvent ae)
{
if(ae.getSource()==delete)
{
try{
public void actionPerformed(ActionEvent ae) {
if (ae.getSource() == delete) {
try {
String usn = usnT.getText();
String usn1="",r;
int count=0;
File file = new File("student.txt"); //student
BufferedReader br = new BufferedReader(new FileReader(file));

File file1 = new File("journal.txt"); //journal
BufferedReader br1 = new BufferedReader(new FileReader(file1));

File temp = new File("temp.txt"); //student temp
Boolean createNewFile = temp.createNewFile();
BufferedWriter pw = new BufferedWriter(new FileWriter(temp));

File temp1 = new File("temp1.txt"); //journal temp
Boolean createNewFile1 = temp.createNewFile();
BufferedWriter pw1 = new BufferedWriter(new FileWriter(temp1));
while((r= br.readLine()) !=null)
{
String[] result = r.split("\\|");
usn1=result[1];
if(usn1.equals(usn))
{
count=1;
boolean found = false;
File studentFile = new File("student.csv");
File tempStudentFile = new File("temp.csv");

BufferedReader studentReader = new BufferedReader(new FileReader(studentFile));
BufferedWriter studentWriter = new BufferedWriter(new FileWriter(tempStudentFile));

String studentLine;
while ((studentLine = studentReader.readLine()) != null) {
String[] parts = studentLine.split(",");
if (parts.length > 1 && parts[1].equals(usn)) {
found = true;
continue;
}
else
{
pw.write(r);
pw.write("\n");
}
studentWriter.write(studentLine);
studentWriter.newLine();
}

while((r= br1.readLine()) !=null)
{
String[] result = r.split("\\|");
usn1=result[0];
if(usn1.equals(usn))
{
studentReader.close();
studentWriter.close();

if (found) {
studentFile.delete();
tempStudentFile.renameTo(studentFile);
}

File journalFile = new File("journal.csv");
File tempJournalFile = new File("temp.csv");

BufferedReader journalReader = new BufferedReader(new FileReader(journalFile));
BufferedWriter journalWriter = new BufferedWriter(new FileWriter(tempJournalFile));

String journalLine;
while ((journalLine = journalReader.readLine()) != null) {
String[] parts = journalLine.split(",");
if (parts.length > 0 && parts[0].equals(usn)) {
continue;
}
else
{
pw1.write(r);
pw1.write("\n");
}
journalWriter.write(journalLine);
journalWriter.newLine();
}

if(count == 0)
showMessageDialog(null, "Invalid USN");
else
journalReader.close();
journalWriter.close();

if (found) {
journalFile.delete();
tempJournalFile.renameTo(journalFile);
showMessageDialog(null, "Record Deleted!");
} else {
showMessageDialog(null, "Record with provided USN not found!");
}

pw.flush();
pw.close();
br.close();
pw1.close();
br1.close();

file.delete();
temp.renameTo(file);
file1.delete();
temp1.renameTo(file1);

}
catch(Exception e)
{
} catch (Exception e) {
e.printStackTrace();
}

this.dispose();
Home h=new Home();
h.setSize(2300,790);
Home h = new Home();
h.setSize(2300, 790);
h.setVisible(true);
}

if(ae.getSource()==back)
{
try
{
if (ae.getSource() == back) {
try {
this.dispose();
Home h=new Home();
h.setSize(2300,790);
Home h = new Home();
h.setSize(2300, 790);
h.setVisible(true);
}
catch(Exception e)
{
} catch (Exception e) {
e.printStackTrace();
}
}
}



public static void main(String args[])
{
Delete del=new Delete();
del.setSize(2300,790);
del.setVisible(true);
}

public static void main(String args[]) {
Delete del = new Delete();
del.setSize(2300, 790);
del.setVisible(true);
}
}
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