Notes

import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.ObjectOutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;


public class RehberGUI extends javax.swing.JFrame {

DefaultTableModel dtm = null ;
ArrayList <String[]> rL = new ArrayList<>();
//ArrayList <String> yL = new ArrayList<>();

public RehberGUI() {
initComponents();
setLocationRelativeTo(null);
dtm = (DefaultTableModel) jTable1.getModel();
this.addWindowListener(new WindowListener() {

public void windowOpened(WindowEvent e) {

}

public void windowClosing(WindowEvent e) {
File f1 = new File("C:/Users/Erdinç/Desktop/rehber1.txt");
try
{
PrintWriter yaz = new PrintWriter(new FileWriter(f1));
for (String[]arr : rL) {
String s = String.format("%s;%s;%sn", arr);
System.out.println(Arrays.toString(arr));
yaz.printf(s,Arrays.toString(arr));
}
yaz.close();



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

}

public void windowClosed(WindowEvent e) {


}

public void windowIconified(WindowEvent e) {

}

public void windowDeiconified(WindowEvent e) {

}

public void windowActivated(WindowEvent e) {

}

public void windowDeactivated(WindowEvent e) {

}
});
}

@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jLabel1 = new javax.swing.JLabel();
dosyaYolu = new javax.swing.JTextField();
incele = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
ekle = new javax.swing.JButton();
guncelle = new javax.swing.JButton();
sil = new javax.swing.JButton();
jLabel2 = new javax.swing.JLabel();
ad = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
soyad = new javax.swing.JTextField();
no = new javax.swing.JTextField();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jLabel1.setText("Dosya Yolu");

incele.setText("İNCELE");
incele.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
inceleActionPerformed(evt);
}
});

jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {

},
new String [] {
"Ad", "Soyad", "Telefon NO"
}
) {
boolean[] canEdit = new boolean [] {
false, false, false
};

public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
jScrollPane1.setViewportView(jTable1);

ekle.setText("Kayıt Ekle");
ekle.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
ekleActionPerformed(evt);
}
});

guncelle.setText("Kayıt Güncelle");
guncelle.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
guncelleActionPerformed(evt);
}
});

sil.setText("Kayıt Sil");
sil.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
silActionPerformed(evt);
}
});

jLabel2.setText("Ad");

jLabel3.setText("Soyad");

jLabel4.setText("Telefon No");

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(dosyaYolu, javax.swing.GroupLayout.PREFERRED_SIZE, 480, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(incele, javax.swing.GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE))
.addComponent(jScrollPane1)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(sil, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel1)
.addGroup(layout.createSequentialGroup()
.addComponent(ekle, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(138, 138, 138)
.addComponent(guncelle, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(ad, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(97, 97, 97)))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(soyad, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(10, 10, 10)
.addComponent(no, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(0, 0, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(dosyaYolu, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(incele))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 202, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(ekle)
.addComponent(guncelle)
.addComponent(sil))
.addGap(37, 37, 37)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(ad, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(soyad, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(no, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4))
.addContainerGap(40, Short.MAX_VALUE))
);

pack();
}// </editor-fold>

private void inceleActionPerformed(java.awt.event.ActionEvent evt) {
File f = new File(dosyaYolu.getText());
try {

Scanner sc = new Scanner(f,"UTF-8");
String str = "";

while(sc.hasNextLine())
{
str = sc.nextLine();

String words[] = str.split(";");
rL.add(words);
dtm.addRow(words);
}
} catch (Exception e) {
}
}

private void ekleActionPerformed(java.awt.event.ActionEvent evt) {
String str[] = { ad.getText(),soyad.getText(),no.getText() };
rL.add(str);
dtm.addRow(str);
ad.setText("");
soyad.setText("");
no.setText("");
}

private void guncelleActionPerformed(java.awt.event.ActionEvent evt) {
int ndx = jTable1.getSelectedRow();
String name = ad.getText(), surname = soyad.getText(), phoneNo = no.getText();
String str[] = { name , surname , phoneNo };

if (ndx == -1 )
{
JOptionPane.showMessageDialog(this, "Seçim Yapmadınız", "Hata", JOptionPane.ERROR_MESSAGE);
}
else
{
jTable1.setValueAt(name, ndx, 0);
jTable1.setValueAt(surname, ndx, 1);
jTable1.setValueAt(phoneNo, ndx, 2);
rL.set(ndx, str);
}
ad.setText("");
soyad.setText("");
no.setText("");
}

private void silActionPerformed(java.awt.event.ActionEvent evt) {
int ndx = jTable1.getSelectedRow();

if (ndx == -1) {

JOptionPane.showMessageDialog(this, "Seçim Yapmadınız", "Hata", JOptionPane.ERROR_MESSAGE);
}
else{

dtm.removeRow(ndx);
rL.remove(ndx);
}
}

public static void main(String args[]) {

//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(RehberGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(RehberGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(RehberGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(RehberGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>


java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new RehberGUI().setVisible(true);
}
});
}

// Variables declaration - do not modify
private javax.swing.JTextField ad;
private javax.swing.JTextField dosyaYolu;
private javax.swing.JButton ekle;
private javax.swing.JButton guncelle;
private javax.swing.JButton incele;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField no;
private javax.swing.JButton sil;
private javax.swing.JTextField soyad;
// End of variables declaration
}