import java.util.ArrayList;
import java.util.List;
import javax.swing.table.DefaultTableModel;
public class Main {
public static void main(String s[]) {
DefaultTableModel model = new DefaultTableModel();
model.addColumn("Col1");
model.addColumn("Col2");
model.addRow(new Object[] { "1", "v2" });
model.addRow(new Object[] { "2", "v2" });
List<String> numdata = new ArrayList<String>();
for (int count = 0; count < model.getRowCount(); count++) {
numdata.add(model.getValueAt(count, 0).toString());
}
System.out.println(numdata);
}
}