import javax.swing.*;
import javax.swing.table.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;

public class JTableToTextFile{
JTable table;
JButton button;
public static void main(String[] args) {
new JTableToTextFile();
}

public JTableToTextFile(){
JFrame frame = new JFrame("Getting Cell Values in JTable");
JPanel panel = new JPanel();
String data[][] = {{"Angelina","Mumbai"},{"Martina","Delhi"}};

String col[] = {"Name","Address"};
DefaultTableModel model = new DefaultTableModel(data, col);
table = new JTable(model);
JScrollPane pane = new JScrollPane(table);
button=new JButton("Submit");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
int index=1;
int count=table.getRowCount();

try{
for(int i=0;i<count;i++){
Object obj1 = GetData(table, i, 0);
Object obj2 = GetData(table, i, 1);
String value1=obj1.toString();
String value2=obj2.toString();

System.out.println(value1);
System.out.println(value2);
BufferedWriter bw=new BufferedWriter(new FileWriter("data.txt",true));
bw.write(value1+" "+value2);
bw.newLine();
bw.close();
index++;
}
}
catch(Exception e){}
}
});
panel.add(pane);
panel.add(button);
frame.add(panel);
frame.setSize(500,500);
frame.setUndecorated(true);
frame.getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public Object GetData(JTable table, int row_index, int col_index){
return table.getModel().getValueAt(row_index, col_index);
}
}