Mega Code Archive
This program demonstrates how to work with rows and columns in a table
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/*
This program is a part of the companion code for Core Java 8th ed.
(http://horstmann.com/corejava)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashSet;
import javax.swing.ImageIcon;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.RowFilter;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
/**
* This program demonstrates how to work with rows and columns in a table.
*
* @version 1.20 2007-08-01
* @author Cay Horstmann
*/
public class TableRowColumnTest {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame frame = new PlanetTableFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}
}
/**
* This frame contains a table of planet data.
*/
class PlanetTableFrame extends JFrame {
public PlanetTableFrame() {
setTitle("TableRowColumnTest");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
TableModel model = new DefaultTableModel(cells, columnNames) {
public Class<?> getColumnClass(int c) {
return cells[0][c].getClass();
}
};
table = new JTable(model);
table.setRowHeight(100);
table.getColumnModel().getColumn(COLOR_COLUMN).setMinWidth(250);
table.getColumnModel().getColumn(IMAGE_COLUMN).setMinWidth(100);
final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
table.setRowSorter(sorter);
sorter.setComparator(COLOR_COLUMN, new Comparator<Color>() {
public int compare(Color c1, Color c2) {
int d = c1.getBlue() - c2.getBlue();
if (d != 0)
return d;
d = c1.getGreen() - c2.getGreen();
if (d != 0)
return d;
return c1.getRed() - c2.getRed();
}
});
sorter.setSortable(IMAGE_COLUMN, false);
add(new JScrollPane(table), BorderLayout.CENTER);
removedRowIndices = new HashSet<Integer>();
removedColumns = new ArrayList<TableColumn>();
final RowFilter<TableModel, Integer> filter = new RowFilter<TableModel, Integer>() {
public boolean include(Entry<? extends TableModel, ? extends Integer> entry) {
return !removedRowIndices.contains(entry.getIdentifier());
}
};
// create menu
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu selectionMenu = new JMenu("Selection");
menuBar.add(selectionMenu);
rowsItem = new JCheckBoxMenuItem("Rows");
columnsItem = new JCheckBoxMenuItem("Columns");
cellsItem = new JCheckBoxMenuItem("Cells");
rowsItem.setSelected(table.getRowSelectionAllowed());
columnsItem.setSelected(table.getColumnSelectionAllowed());
cellsItem.setSelected(table.getCellSelectionEnabled());
rowsItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
table.clearSelection();
table.setRowSelectionAllowed(rowsItem.isSelected());
updateCheckboxMenuItems();
}
});
selectionMenu.add(rowsItem);
columnsItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
table.clearSelection();
table.setColumnSelectionAllowed(columnsItem.isSelected());
updateCheckboxMenuItems();
}
});
selectionMenu.add(columnsItem);
cellsItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
table.clearSelection();
table.setCellSelectionEnabled(cellsItem.isSelected());
updateCheckboxMenuItems();
}
});
selectionMenu.add(cellsItem);
JMenu tableMenu = new JMenu("Edit");
menuBar.add(tableMenu);
JMenuItem hideColumnsItem = new JMenuItem("Hide Columns");
hideColumnsItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
int[] selected = table.getSelectedColumns();
TableColumnModel columnModel = table.getColumnModel();
// remove columns from view, starting at the last
// index so that 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);
}
}
});
tableMenu.add(hideColumnsItem);
JMenuItem showColumnsItem = new JMenuItem("Show Columns");
showColumnsItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
// restore all removed columns
for (TableColumn tc : removedColumns)
table.addColumn(tc);
removedColumns.clear();
}
});
tableMenu.add(showColumnsItem);
JMenuItem hideRowsItem = new JMenuItem("Hide Rows");
hideRowsItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
int[] selected = table.getSelectedRows();
for (int i : selected)
removedRowIndices.add(table.convertRowIndexToModel(i));
sorter.setRowFilter(filter);
}
});
tableMenu.add(hideRowsItem);
JMenuItem showRowsItem = new JMenuItem("Show Rows");
showRowsItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
removedRowIndices.clear();
sorter.setRowFilter(filter);
}
});
tableMenu.add(showRowsItem);
JMenuItem printSelectionItem = new JMenuItem("Print Selection");
printSelectionItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
int[] selected = table.getSelectedRows();
System.out.println("Selected rows: " + Arrays.toString(selected));
selected = table.getSelectedColumns();
System.out.println("Selected columns: " + Arrays.toString(selected));
}
});
tableMenu.add(printSelectionItem);
}
private void updateCheckboxMenuItems() {
rowsItem.setSelected(table.getRowSelectionAllowed());
columnsItem.setSelected(table.getColumnSelectionAllowed());
cellsItem.setSelected(table.getCellSelectionEnabled());
}
private Object[][] cells = {
{ "Mercury", 2440.0, 0, false, Color.YELLOW, new ImageIcon("Mercury.gif") },
{ "Venus", 6052.0, 0, false, Color.YELLOW, new ImageIcon("Venus.gif") },
{ "Earth", 6378.0, 1, false, Color.BLUE, new ImageIcon("Earth.gif") },
{ "Mars", 3397.0, 2, false, Color.RED, new ImageIcon("Mars.gif") },
{ "Jupiter", 71492.0, 16, true, Color.ORANGE, new ImageIcon("Jupiter.gif") },
{ "Saturn", 60268.0, 18, true, Color.ORANGE, new ImageIcon("Saturn.gif") },
{ "Uranus", 25559.0, 17, true, Color.BLUE, new ImageIcon("Uranus.gif") },
{ "Neptune", 24766.0, 8, true, Color.BLUE, new ImageIcon("Neptune.gif") },
{ "Pluto", 1137.0, 1, false, Color.BLACK, new ImageIcon("Pluto.gif") } };
private String[] columnNames = { "Planet", "Radius", "Moons", "Gaseous", "Color", "Image" };
public static final int COLOR_COLUMN = 4;
public static final int IMAGE_COLUMN = 5;
private JTable table;
private HashSet<Integer> removedRowIndices;
private ArrayList<TableColumn> removedColumns;
private JCheckBoxMenuItem rowsItem;
private JCheckBoxMenuItem columnsItem;
private JCheckBoxMenuItem cellsItem;
private static final int DEFAULT_WIDTH = 600;
private static final int DEFAULT_HEIGHT = 500;
}
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