What this is

This file is part of the Tame Swing collection that we have compiled. All of the Java source code in these examples was created by Nobuo Tamemasa. As these examples have become hard to find on the internet, we have put them in one place here, supported by minimal advertising. In time we will include images of each running sample Java/Swing application.

The intent of having these files here is to help you learn Java and Swing by example, and Tame certainly created some terrific examples of the power of the Swing framework.

Other links

Keywords/tags

java, swing, JTable, table, header, renderer, editor, cell, model, TableModel, example, sample, source

The source code

/* (swing1.1.1) */
package tame.examples;

import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;

import tame.table.EditableHeader;
import tame.table.EditableHeaderTableColumn;

/**
@author Nobuo Tamemasa
@version 1.0 08/22/99
*/
public class EditableHeaderTableExample2 extends JFrame {

  public EditableHeaderTableExample2(){
    super( "EditableHeader Example" );

    JTable table = new JTable(7, 5);
    TableColumnModel columnModel = table.getColumnModel();
    table.setTableHeader(new EditableHeader(columnModel));

    String[] items = {"Dog","Cat"};
    JComboBox combo = new JComboBox();
    for (int i=0;i<items.length;i++) {
      combo.addItem(items[i]);
    }
    ComboRenderer renderer = new ComboRenderer(items);

    EditableHeaderTableColumn col;
    // column 1
    col = (EditableHeaderTableColumn)table.getColumnModel().getColumn(1);
    col.setHeaderValue(combo.getItemAt(0));
    col.setHeaderRenderer(renderer);
    col.setHeaderEditor(new DefaultCellEditor(combo));

    // column 3
    col = (EditableHeaderTableColumn)table.getColumnModel().getColumn(3);
    col.setHeaderValue(combo.getItemAt(0));
    //col.setHeaderRenderer(renderer);
    col.setHeaderEditor(new DefaultCellEditor(combo));

    JScrollPane pane = new JScrollPane(table);
    getContentPane().add(pane);
  }

  class ComboRenderer extends JComboBox
                     implements TableCellRenderer {

    ComboRenderer(String[] items) {
      for (int i=0;i<items.length;i++) {
        addItem(items[i]);
      }
    }

    public Component getTableCellRendererComponent(
                 JTable table, Object value,
                 boolean isSelected, boolean hasFocus,
		 int row, int column) {
      setSelectedItem(value);
      return this;
    }
  }

  public static void main(String[] args) {
    EditableHeaderTableExample2 frame = new EditableHeaderTableExample2();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    frame.setSize( 300, 100 );
    frame.setVisible(true);
  }
}