Simple JTable question

Question

Hi!
I'm working on yami . Yesterday I've got a problem, and I can't figure out. The program is very simple: a query view. You are connecting -> select database from JTree, from sub need to select the table, and finally need to show results in JTable.
Connection Dialog -> if OK -> window with 2 panels JTree (browseInterface).
I made selection on this way:
When the value from JTree is table, I'm passing the database and the tablename again to the browseInterface. I made a command line check, and when the values are passed to the program it prints the query to the console, but there are no changes in the JTable. I creating the JTable on this way:
     public dbTable(String[][] array, String[] colNames) {
          dbTable = new JTable(array, colNames);
          setLayout(new BorderLayout());
          add(dbTable);
          setSize(200, 200);
          JScrollPane jsp = new JScrollPane(dbTable);
          add(jsp, BorderLayout.CENTER);
     }Where are the array and the colNames are from the query. So, I think that JTable gets all arguments, but it isn't draws table from the results. Can somebody help me?
Thanks!

Answer 1

Here is my SSCCE example:
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.*;
public class sscce {
          public static void main(String[] args) {
               JFrame mainW = new JFrame("table tests");
               mainW.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
               Integer i = 0;
               panel bi = new panel(i);
               mainW.add(bi);
               mainW.pack();
               mainW.setVisible(true);
               mainW.setSize(500, 300);
     public static class MyTableModel extends AbstractTableModel {
          static String[] clns;
          static Object[][] dt;
          public MyTableModel() {
               fireTableStructureChanged();
          public static void passColumnNames(String[] strArray) {
               clns = strArray;
          public static void passData(Object[][] objArray) {
               dt = objArray;
          public int getColumnCount() {
               return clns.length;
          public int getRowCount() {
               return dt.length;
          public String getColumnName(int col) {
               return clns[col];
          public Object getValueAt(int row, int col) {
               return dt[row][col];
          public Class getColumnClass(int c) {
               return getValueAt(0, c).getClass();
          public void setValueAt(Object value, int row, int col) {
               dt[row][col] = value;
               fireTableCellUpdated(row, col);
     public static class TableDemo extends JComponent {
          public TableDemo(Integer numb) {
               String[] columnNames = new String[numb];
               final Object[][] data = new Object[10][numb];
               Integer b = 0;
               Integer c = 0;
               Integer d = 0;
               for(int i = 0; i < numb; i++) {
                    b = i;
                    c = b + numb;
                    d = b - numb;
                    columnNames[i] = c.toString();
                    for(int j = 0; j < 10; j++) {
                         data[j] = d.toString();     
               MyTableModel.passColumnNames(columnNames);
               MyTableModel.passData(data);
               JTable table = new JTable(new MyTableModel());
               table.setAutoCreateColumnsFromModel(true);
               setLayout(new BorderLayout());
               add(table);
               JScrollPane scrollPane = new JScrollPane(table);
               add(scrollPane, BorderLayout.NORTH);
     public static class button extends JButton implements ActionListener {
          JButton btn;
          Integer numb = 1;
          public button() {
               btn = new JButton("Change");
               btn.addActionListener(this);
               add(btn);
          public void actionPerformed(ActionEvent e) {
               if (e.getSource() == btn) {
                    panel.createBrowseInterface(numb);
                    numb++;
     public static class panel extends JPanel {
          public panel(Integer a) {
               setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));
               JPanel leftPanel = new JPanel();
               leftPanel.add(new button());
               JPanel rightPanel = new JPanel();
               rightPanel.add(new TableDemo(a));
               add(leftPanel);
               add(rightPanel);
          public static void createBrowseInterface(Integer numb) {
               panel bi = new panel(numb);
               bi.setVisible(true);