Re: [java-list] Usando JTable????

Tue, 10 Jul 2001 10:41:39 -0700

Caro Awdryn Cavalache, segue abaixo o exemplo que vc est� procurando........
 
 
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.text.*;
import javax.swing.*;
import javax.swing.table.*;
 
public class TableSelectionTest
{  public static void main(String[] args)
   {  JFrame frame = new TableSelectionFrame();
      frame.show();
   }
}
 
class TableSelectionFrame extends JFrame
   implements ActionListener
{  public TableSelectionFrame()
   {  setTitle("TableSelectionTest");
      setSize(300, 200);
      addWindowListener(new WindowAdapter()
         {  public void windowClosing(WindowEvent e)
            {  System.exit(0);
            }
         } );
 
      // set up multiplication table
 
      model = new DefaultTableModel(10, 10);
 
      for (int i = 0; i < model.getRowCount(); i++)
         for (int j = 0; j < model.getColumnCount(); j++)
            model.setValueAt(
               new Integer((i + 1) * (j + 1)), i, j);
 
      table = new JTable(model);
 
      Container contentPane = getContentPane();
      contentPane.add(new JScrollPane(table), "Center");
 
      // create menu
 
      JMenuBar menuBar = new JMenuBar();
      setJMenuBar(menuBar);
 
      JMenu selectionMenu = new JMenu("Selection");
      menuBar.add(selectionMenu);
 
      rowsItem = new JCheckBoxMenuItem("Rows");
      rowsItem.setSelected(table.getRowSelectionAllowed());
      rowsItem.addActionListener(this);
      selectionMenu.add(rowsItem);
 
      columnsItem = new JCheckBoxMenuItem("Columns");
      columnsItem.setSelected(table.getColumnSelectionAllowed());
      columnsItem.addActionListener(this);
      selectionMenu.add(columnsItem);
 
      cellsItem = new JCheckBoxMenuItem("Cells");
      cellsItem.setSelected(table.getCellSelectionEnabled());
      cellsItem.addActionListener(this);
      selectionMenu.add(cellsItem);
 
      JMenu tableMenu = new JMenu("Edit");
      menuBar.add(tableMenu);
 
      showColumnsItem = new JMenuItem("Show Columns");
      showColumnsItem.addActionListener(this);
      tableMenu.add(showColumnsItem);
 
      hideColumnsItem = new  JMenuItem("Hide Columns");
      hideColumnsItem.addActionListener(this);
      tableMenu.add(hideColumnsItem);
 
      addRowItem = new JMenuItem("Add Row");
      addRowItem.addActionListener(this);
      tableMenu.add(addRowItem);
 
      removeRowsItem = new  JMenuItem("Remove Rows");
      removeRowsItem.addActionListener(this);
      tableMenu.add(removeRowsItem);
 
      clearCellsItem = new  JMenuItem("Clear Cells");
      clearCellsItem.addActionListener(this);
      tableMenu.add(clearCellsItem);
   }
 
   public void actionPerformed(ActionEvent event)
   {  Object source = event.getSource();
      if (source == rowsItem)
      {  table.setRowSelectionAllowed(rowsItem.isSelected());
         table.clearSelection();
      }
      else if (source == columnsItem)
      {  table.setColumnSelectionAllowed(columnsItem.isSelected());
         table.clearSelection();
      }
      else if (source == cellsItem)
      {  table.setCellSelectionEnabled(cellsItem.isSelected());
         table.clearSelection();
      }
      else if (source == hideColumnsItem)
      {  int[] selected = table.getSelectedColumns();
         TableColumnModel columnModel = table.getColumnModel();
 
         /* remove columns from view, starting at the last
            index so that the column numbers aren't affected
         */
 
         for (int i = selected.length - 1; i >= 0; i--)
         {  TableColumn column
               = columnModel.getColumn(selected[i]);
            table.removeColumn(column);
 
            // store removed columns for "show columns" command
 
            removedColumns.add(column);
         }
      }
      else if (source == showColumnsItem)
      {  // restore all removed columns
         for (int i = 0; i < removedColumns.size(); i++)
            table.addColumn((TableColumn)removedColumns.get(i));
         removedColumns.clear();
      }
      else if (source == removeRowsItem)
      {  int[] selected = table.getSelectedRows();
 
         /* remove rows from model, starting at the last
            index so that the row numbers aren't affected
         */
 
         for (int i = selected.length - 1; i >= 0; i--)
            model.removeRow(selected[i]);
      }
      else if (source == addRowItem)
      {  // add a new row to the multiplication table in the model
 
         Integer[] newCells = new Integer[model.getColumnCount()];
         for (int i = 0; i < newCells.length; i++)
            newCells[i]
               = new Integer((i + 1) * (model.getRowCount() + 1));
         model.addRow(newCells);
      }
      else if (source == clearCellsItem)
      {  // set all selected cells to 0
 
         for (int i = 0; i < table.getRowCount(); i++)
            for (int j = 0; j < table.getColumnCount(); j++)
               if (table.isCellSelected(i, j))
                  table.setValueAt(new Integer(0), i, j);
      }
   }
 
   private DefaultTableModel model;
   private JTable table;
 
   private JMenuItem showColumnsItem;
   private JMenuItem hideColumnsItem;
 
   private JMenuItem addRowItem;
   private JMenuItem removeRowsItem;
 
   private JMenuItem clearCellsItem;
 
   private JCheckBoxMenuItem rowsItem;
   private JCheckBoxMenuItem columnsItem;
   private JCheckBoxMenuItem cellsItem;
 
   private ArrayList removedColumns = new ArrayList();
}
 
Falow
 
 
 
Thiago Henrique de Luca Gon�alves
Programador
[EMAIL PROTECTED]
Multimedia Caf�
http://www.mmcafe.com.br
(55 11) 3266-4266
Web Thinking
----- Original Message -----
From: John Tau
Sent: Tuesday, July 10, 2001 12:09 PM
Subject: Re: [java-list] Usando JTable????

De uma olhada no tutorial da Sun sobre JTable:
 
 
[]'s
John Tau.
----- Original Message -----
Sent: Tuesday, July 10, 2001 8:42 AM
Subject: [java-list] Usando JTable????

Aqui vai algumas perguntas de JTable.
 
--->Vou usar um JTabel como entrada de dados em um aplicativo e queria saber como fa�o para obter um JTable vasia (sem dados apresentados inicialmente) somente com os nomes das colunas?
 
--->Como fa�o para obter uma linha a mais no JTable em tempo de execu��o, quando o usu�rio chegar ao fim do JTable e precisar digitar mais informa��es?

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