Mega Code Archive
Demonstrates the editable property of Swing tables
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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.TableModel;
public class EditableTable {
public static void main(String[] a) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String[] columnTitles = { "First Name", "Last Name", "Weight (lb)", "Blood Group", "Age>20yrs" };
Object[][] dataEntries = { { "Saravan", "Pantham", new Integer(50), "B", new Boolean(false) },
{ "Eric", "", new Integer(180), "O", new Boolean(true) },
{ "John", "", new Integer(120), "AB", new Boolean(false) },
{ "Mathew", "", new Integer(140), "A", new Boolean(true) }, };
TableModel model = new EditableTableModel(columnTitles, dataEntries);
JTable table = new JTable(model);
table.createDefaultColumnsFromModel();
String[] bloodGroups = { "A", "B", "AB", "O" };
JComboBox comboBox = new JComboBox(bloodGroups);
table.getColumnModel().getColumn(3).setCellEditor(new DefaultCellEditor(comboBox));
frame.add(new JScrollPane(table));
frame.setSize(300, 200);
frame.setVisible(true);
}
}
class EditableTableModel extends AbstractTableModel {
String[] columnTitles;
Object[][] dataEntries;
int rowCount;
public EditableTableModel(String[] columnTitles, Object[][] dataEntries) {
this.columnTitles = columnTitles;
this.dataEntries = dataEntries;
}
public int getRowCount() {
return dataEntries.length;
}
public int getColumnCount() {
return columnTitles.length;
}
public Object getValueAt(int row, int column) {
return dataEntries[row][column];
}
public String getColumnName(int column) {
return columnTitles[column];
}
public Class getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
public boolean isCellEditable(int row, int column) {
return true;
}
public void setValueAt(Object value, int row, int column) {
dataEntries[row][column] = value;
}
}
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