Mega Code Archive
A table that allows the user to pick a color from a pulldown list
<![CDATA[
/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly
*/
// ColorTable.java
//A table that allows the user to pick a color from a pulldown list. This
//is accomplished by using the DefaultCellRenderer and DefaultCellEditor
//classes.
//
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
public class ColorTable extends JFrame {
ColorName colors[] = { new ColorName("Red"), new ColorName("Green"),
new ColorName("Blue"), new ColorName("Black"),
new ColorName("White") };
public ColorTable() {
super("Table With DefaultCellEditor Example");
setSize(500, 300);
setDefaultCloseOperation(EXIT_ON_CLOSE);
JTable table = new JTable(new AbstractTableModel() {
ColorName data[] = { colors[0], colors[1], colors[2], colors[3],
colors[4], colors[0], colors[1], colors[2], colors[3],
colors[4] };
public int getColumnCount() {
return 3;
}
public int getRowCount() {
return 10;
}
public Object getValueAt(int r, int c) {
switch (c) {
case 0:
return (r + 1) + ".";
case 1:
return "Some pithy quote #" + r;
case 2:
return data[r];
}
return "Bad Column";
}
public Class getColumnClass(int c) {
if (c == 2)
return ColorName.class;
return String.class;
}
// Make Column 2 editable...
public boolean isCellEditable(int r, int c) {
return c == 2;
}
public void setValueAt(Object value, int r, int c) {
data[r] = (ColorName) value;
}
});
table.setDefaultEditor(ColorName.class, new DefaultCellEditor(
new JComboBox(colors)));
table.setDefaultRenderer(ColorName.class,
new DefaultTableCellRenderer());
table.setRowHeight(20);
getContentPane().add(new JScrollPane(table));
}
public static void main(String args[]) {
ColorTable ex = new ColorTable();
ex.setVisible(true);
}
public class ColorName {
String cname;
public ColorName(String name) {
cname = name;
}
public String toString() {
return cname;
}
}
}
]]>