Small Problem in JTable,Please help me..

Question

hi ,i am doing college project & hv some problem
Problem : (code is given below ) as i run program ,i am not able to edit cells of table one by one.when i write value in any cell & then if i edit other cell, then previous cell's value become come to initial value
This problem is requires small modification ,plz help(unless my project will not exceed further )
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.table.*;
//import javax.swing.JScrollPane;
//import javax.swing.JTable;
import java.util.*;
import java.util.List;
public class v_swing1 extends JFrame
     {     JButton b1;
          Container cont;
          JTable table ;
          TableModel myData ;
          TextField t1;
          private LocalTableModel theTableModel;                         //t1.setEditable(false);
          private List<Row> theRows;
     private class Row {
          private int theFirstField;
          private String theSecondField;
          public Row(int aFirstField, String aSecondField) {
               theFirstField = aFirstField;
               theSecondField = aSecondField;
          public int getFirstField() {
               return theFirstField;
          public String getSecondField() {
               return theSecondField;
     private class LocalTableModel extends AbstractTableModel {
          public String getColumnName(int column) {
               if (column == 0) {return "name";}
               else      {  return "age";}     }
          public Class getColumnClass(int columnIndex) {
          if (columnIndex == 0) { return Integer.class;}
               else      {   return String.class;   }
          public boolean isCellEditable(int rowIndex, int columnIndex) {
               return true;     }
          public int getRowCount() {
               return theRows.size();
          public int getColumnCount() {
               return 2;
          public Object getValueAt(int rowIndex, int columnIndex) {
               Row row = theRows.get(rowIndex);
               if (columnIndex == 0) { return row.getFirstField();}
               else { return row.getSecondField(); }
     public v_swing1(String theLable)
          b1=new JButton();
          t1=new TextField(4);
          theRows = new LinkedList<Row>();
          theTableModel = new LocalTableModel();           
          table = new JTable(theTableModel);
          setLayout(new FlowLayout());
          JPanel thePan=new JPanel();
          thePan.add(t1);
          thePan.add(b1);
          Container cont= getContentPane();
          cont.setLayout(new FlowLayout());
          cont.add(thePan);
          b1.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e)
                    load();
                    reload();
                         //x=Integer.parseInt(t1.getText());
                    //t1.setText(" ");          
                                        // table = new JTable(2,3);     
                              //table.setRowSelectionAllowed(true);
                              // table.setColumnSelectionAllowed(true);
                              //table.setCellSelectionEnabled(true);
          cont.add(new JScrollPane(table));
          load();               
     private void reload(){
          int l =Integer.parseInt(t1.getText());
          for(int size = theRows.size();size<=l;size++)
          theRows.add(new Row(size, " "+size));
          theTableModel.fireTableRowsInserted(size, size);
     private void load(){
          int size = theRows.size();
          if (size > 0) {
               theRows.clear();
               theTableModel.fireTableRowsDeleted(0, size - 1);
          theRows.add(new Row(0, "" + 0));     
          theTableModel.fireTableRowsInserted(0, 1);
     public static void main(String args[])
          v_swing1 obj=new v_swing1("hay");
          obj.addWindowListener(new WindowAdapter(){
          public void windowClosing(WindowEvent e) {
          System.exit(0);
          obj.setSize(400,400);
          obj.setVisible(true);
     }

Answer 1

Please cut and paste the exact message in a reply.
Most likely, your CLASSPATH is wrong.
Larry