Unable to grow and shrink a JTable within a JScrollPane

Question

I need help with the following: I want to display a JTable component with a calendar like design. Dragging the size of the parent component (having a border to drag) should dynamically adapt the JTable' size and its cells. Since the JTable has a minimum size shrinking the parent component should show scrollbars if the minimum size is reached horizontal or vertical respectively.
I have the JTable put ijnto the viewport of a scrollpane and the scrollpane is the child component of a JPanel. So dragging appears with the panel.
The JTable cells do nicely but from a specific size on there is a grey area on the lower part of the JPanel which is not repainted. What is causing this? What do I have to do? I'm lost in the jungle of invalidate(), repaint(), update(), doLayout() etc.
Here is my SSCCE (at least I hope it is one):
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.UIManager;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;
//public class MyComponent extends JScrollPane
public class MyComponent extends JPanel
///   class data
     static public final long serialVersionUID = -1L;
     static public final int c_ColWidth = 29;
     static public final int c_RowHeight = 18;
     static public final int c_TableWidth = 930;
     static public final int c_TableHeight = 234;
///   instance data
     private String[] m_strColHeader = {
          "01", "02", "03", "04", "05", "06", "07", "08", "09", "10",
          "11", "12", "13", "14", "15", "16", "17", "18", "19", "20",
          "21", "22", "23", "24", "25", "26", "27", "28", "29", "30",
          "31",
     private Object[][] m_Data = new Object[12][33];// data array
     private TableModel m_DataModel = new AbstractTableModel() {
          static public final long serialVersionUID = -1L;
          public int getColumnCount() { return m_strColHeader.length; }
          public int getRowCount() { return m_Data != null ? m_Data.length : 0; }
          public Object getValueAt(int row, int col) { return m_Data[row][col]; }
          public String getColumnName(int col) { return m_strColHeader[col]; }
          public Class getColumnClass(int col) { return String.class; }
          public boolean isCellEditable(int row, int col) { return false; }
          public void setValueAt(Object aValue, int row, int col) {
               m_Data[row][col] = aValue;
     protected BorderLayout myLayout = new BorderLayout();
     protected JTable tableView = new JTable(m_DataModel);
     protected JScrollPane scrollPane = new JScrollPane(tableView);
///   public class methods
     static public void main(String[] args)
          try
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
          catch(Exception e)
               e.printStackTrace();
          MyComponent comp1 = new MyComponent();
          JFrame frame = new JFrame("MyComponent");
          frame.addWindowListener(new WindowAdapter() {
               public void windowClosing(WindowEvent e) {
                    System.exit(0);
          frame.getContentPane().add(comp1);
          frame.pack();
          frame.setVisible(true);
///   constructors
     public MyComponent()
          try
               jbInit();
               initTable();
          catch(Exception ex)
               ex.printStackTrace();
///   protected instance methods
     protected void initTable()
          // do nor allow user interaction with calendar view
          tableView.getTableHeader().setReorderingAllowed(false);
          tableView.getTableHeader().setResizingAllowed(false);
          //tableView.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
          tableView.setRowHeight(c_RowHeight);
          // adapt all CellRenderers
          for (int i = 0; i < m_DataModel.getColumnCount(); i++)
               TableColumn column = tableView.getColumn(tableView.getColumnName(i));
               column.setMinWidth(c_ColWidth);
               column.setPreferredWidth(c_ColWidth);
///   private instance methods
     private void jbInit() throws Exception
          this.setLayout(myLayout);
          this.add(scrollPane, BorderLayout.CENTER);
          scrollPane.getViewport().setMinimumSize(new Dimension(c_TableWidth, c_TableHeight));
          scrollPane.getViewport().setPreferredSize(new Dimension(c_TableWidth, c_TableHeight));
          tableView.setPreferredSize(new Dimension(c_TableWidth, c_TableHeight));
          addComponentListener(new MyComponent_componentAdapter(this));
///   event handling
     public void componentBoundsChanged(ComponentEvent e)
          scrollPane.setBounds(0, 0, getWidth(), getHeight());
          scrollPane.getViewport().setBounds(0, 0, getWidth(), getHeight());
          //tableView.setBounds(0, 0, getWidth(), getHeight());
          tableView.setSize(scrollPane.getViewport().getWidth(), scrollPane.getViewport().getHeight());
          tableView.setRowHeight(getBounds().height / 13 < c_RowHeight ?
                    c_RowHeight : getBounds().height / 13);
          System.out.println("componentBoundsChanged: getBounds() = " + getBounds());
          System.out.println("componentBoundsChanged: getSize() = " + getSize());
          System.out.println("componentBoundsChanged: getViewport().getBounds() = " + scrollPane.getViewport().getBounds());
          System.out.println("componentBoundsChanged: getViewport().getSize() = " + scrollPane.getViewport().getSize());
          System.out.println("componentBoundsChanged: tableView.getBounds() = " + tableView.getBounds());
          System.out.println("componentBoundsChanged: tableView.getSize() = " + tableView.getSize());
///   event adapters
class MyComponent_componentAdapter extends ComponentAdapter
     protected MyComponent adaptee;
     MyComponent_componentAdapter(MyComponent adaptee)
          this.adaptee = adaptee;
     public void componentMoved(ComponentEvent e)
          adaptee.componentBoundsChanged(e);
     public void componentResized(ComponentEvent e)
          adaptee.componentBoundsChanged(e);
}

Answer 1

I guess i am facing exactly opposite problem.
What i want to do is, I have nested tables in a scroll pane. So I don't want a scroll pane to show exactly whatever visible rows are there in Table (No extra space). If i expand any row, i want scroll pane to be able to show expanded.