• Searching members with forms
   

• Create new window which includes JTable element and 2 (two) buttons: ‘Get’ and ‘Choose’.
  
• Button ‘Get’ calls method (Member.)getAll() . Values in JTable element are replaced by query results.
  
• Button ‘Choose’ updates chosen row to membership form/interface in another window in which member’s information can be modified. This form/interface was created earlier.

  Instructions for JTable
   

  • In basic you can give data shown in JTable element as an parameter (Vector or Object[ ][ ]) to JTable constructor (see javax.swing.JTable). However, the data shown in JTable is ‘static’ which means it cannot be modified (except by removing the old JTable element and creating new one).
    
  • The other way to give JTable element as parameter is to use class of its own using TableModel interface or inherited from class AbstractTableModel.
    

  Example of TableModel class:

public class BasicTableModel extends AbstractTableModel {
    // Column headers can be in String[ ] array
    // Data can be in Vector or Object[ ][ ] array.

    public BasicTableModel( String[ ] p_sHeaders ) {
    super();

        .....

    }

    /**
    * Returns the number of columns in table. Swing objects calls.
    */
    public int getColumnCount() {

    ....

    }

   /**
    * Returns the number of rows in table. Swing objects calls.
    */
    public int getRowCount() {

        ....

    }

    /**
     * Returns the name of column. Swing objects calls.
     */
    public String getColumnName(int iCol) {

        ....

    }

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    /**
     * Returns the value of cell. Swing objects calls.
     */
    public Object getValueAt(int row, int col) {

        ....

    }

    /**
     * Returns the class of column. Swing objects calls, c = index of column.
     */
    public Class getColumnClass(int c) {

        ....

    }

    /**
     * Returns true/false: can user modify a cell? Swing objects calls.
     */
    public boolean isCellEditable(int row, int col) {

        ....

    }

    /**
     * Initializes a cell. Swing objects calls, when user has modified the cell.
     */
    public void setValueAt(Object value, int row, int col) {

        ....

     }
}

• The methods shown above must be created to make class fully suitable as TableModel. In this case more method are needed to update the TableModel with new values.
   
• When using class TableModel, whole data can be updated by using following commands:
   
  js.getViewport().setBackingStoreEnabled(false);
  jt.clearSelection();
  js.getViewport().setViewPosition(new Point(0,0));
  jt.tableChanged(new TableModelEvent( model ));
  js.getViewport().setBackingStoreEnabled(true);
   
• in which…
  jt == JTable
  js == JScrollPane (if JTable is located inside of JScrollPane)
  model == TableModel

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