Java Application using swing to show demo of Table

import javax.swing.*;

public class MyTable {
    JTable tblMyTable;
    JFrame frmMain;
    JPanel pnlContainer;
    JScrollPane scrolTable;

    public MyTable() {
        Object[] heads = { "Roll", "Name", "Address" };
        Object[][] rows = { { "1", "King", "Hetauda" }, { "2", "Xander", "Pokhara" },
                { "3", "Optimus", "Prime Knights" } };
        tblMyTable = new JTable(rows, heads);
        frmMain = new JFrame("My Table Demo");
        pnlContainer = new JPanel();
        frmMain.getContentPane().add(pnlContainer);
        scrolTable = new JScrollPane(tblMyTable);
        pnlContainer.add(scrolTable);
        tblMyTable.setFillsViewportHeight(true);
        frmMain.setSize(400, 400);
        frmMain.setVisible(true);
        frmMain.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    public static void main(String args[]) {
        new MyTable();
    }
}