Using a JComboBox in a Cell in a JTable Component : JTable Renderer Editor « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JTable Renderer Editor

import java.awt.Component;

import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class Main {
  public static void main(String[] argv) throws Exception {
    JTable table = new JTable();
    DefaultTableModel model = (DefaultTableModel) table.getModel();

    model.addColumn("A", new Object[] { "item1" });
    model.addColumn("B", new Object[] { "item2" });

    String[] values = new String[] { "1", "2", "3" };

    TableColumn col = table.getColumnModel().getColumn(0);
    col.setCellEditor(new MyComboBoxEditor(values));
    col.setCellRenderer(new MyComboBoxRenderer(values));
  }
}

class MyComboBoxRenderer extends JComboBox implements TableCellRenderer {
  public MyComboBoxRenderer(String[] items) {
    super(items);
  }

  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
      boolean hasFocus, int row, int column) {
    if (isSelected) {
      setForeground(table.getSelectionForeground());
      super.setBackground(table.getSelectionBackground());
    } else {
      setForeground(table.getForeground());
      setBackground(table.getBackground());
    }
    setSelectedItem(value);
    return this;
  }
}

class MyComboBoxEditor extends DefaultCellEditor {
  public MyComboBoxEditor(String[] items) {
    super(new JComboBox(items));
  }
}

14.60.JTable Renderer Editor
	14.60.1.	Get Default cell Renderer
	14.60.2.	Get Default Cell Editor
	14.60.3.	Default Editors and Renderers
	14.60.4.	Rendering Table Cells: To install the renderer as the default renderer for the JTable for Object.class
	14.60.5.	implements TableCellRenderer
	14.60.6.	extends DefaultCellEditor
	14.60.7.	Cell Renderer for the Gender Column
	14.60.8.	Demonstrates the editable property of Swing tables.
	14.60.9.	An Editor for the Gender Column
	14.60.10.	ColorChooserEditor
	14.60.11.	Using a JComboBox in a Cell in a JTable Component
	14.60.12.	Editing Table Cells: JComboBox As Table Cell Renderer
	14.60.13.	Using a List JSpinner as a Cell Editor in a JTable Component
	14.60.14.	Using default Boolean value cell editor and renderer
	14.60.15.	Creating a Class-Based Custom Cell Renderer in a JTable Component
	14.60.16.	Creating a Custom Cell Renderer in a JTable Component
	14.60.17.	Preventing Invalid Values in a Cell in a JTable Component
	14.60.18.	Using Built-In Cell Renderers and Editors in a JTable Component
	14.60.19.	Save the current value in the cell being edited and stops the editing process
	14.60.20.	Discard any changes made by the user and stops the editing process