A question about table model

Question

I created a table model and use JTable to display content of a database's table with that model.
The problem is: when I update a data to data1 in a cell (first column) and hightlight another cell (second column), all cells of first column change content to data1. What 's the problem with my table model?
import java.util.Vector;
import java.sql.*;
import javax.swing.table.AbstractTableModel;
public class CommonTableModel extends AbstractTableModel {
String[] columnNames;
Vector          rows, newRow;
ResultSetMetaData metaData;
private boolean editable;
public CommonTableModel(ResultSet rs, boolean editable) {
this.editable = editable;
try {
metaData = rs.getMetaData();
int numberOfColumns = metaData.getColumnCount();
columnNames = new String[numberOfColumns];
for(int column = 0; column < numberOfColumns; column++) {
columnNames[column] = metaData.getColumnName(column+1);
rows = new Vector();
newRow = new Vector();
while (rs.next()) {
for (int i = 1; i <= getColumnCount(); i++) {
     newRow.addElement(rs.getObject(i));
rows.addElement(newRow);
} catch (SQLException ex) { System.err.println(ex);}
public int getColumnCount() { return columnNames.length; }
public int getRowCount() { return rows.size();}
public String getColumnName(int column) { return columnNames[column];}
public Object getValueAt(int row, int column) {
     newRow = (Vector)rows.elementAt(row);
     return newRow.elementAt(column);
public Class getColumnClass(int column) {
     return getValueAt(0, column).getClass();
public boolean isCellEditable(int row, int column) {
     if (column == 0) { return false; }
     return editable;
public void setValueAt(Object value, int row, int column) {
     newRow = (Vector)(rows.elementAt(row));
     newRow.setElementAt(value, column);
     fireTableCellUpdated(row, column);
}

Answer 1

Try this :
rows = new Vector();
//newRow = new Vector();
while (rs.next()) {
    newRow = new Vector(); // it must be here
    for (int i = 1; i <= getColumnCount(); i++) {
        newRow.addElement(rs.getObject(i));
    rows.addElement(newRow);
}Denis