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  1. PO
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    <p>you can to start with, simplest code as is possible, maybe depends if you want to see <a href="https://stackoverflow.com/a/12844115/714968">JComboBox as Renderer too by @aterai</a></p> <pre><code>import java.awt.BorderLayout; import javax.swing.DefaultCellEditor; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.AbstractTableModel; import javax.swing.table.DefaultTableCellRenderer; import javax.swing.table.TableCellRenderer; import javax.swing.table.TableColumn; import java.awt.Component; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.ArrayList; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JList; import javax.swing.plaf.basic.BasicComboBoxRenderer; public class TableRenderDemo extends JPanel { private static final long serialVersionUID = 1L; public TableRenderDemo() { super(new BorderLayout(5, 5)); final JTable table = new JTable(new MyTableModel()); table.setPreferredScrollableViewportSize(table.getPreferredSize()); table.setFillsViewportHeight(true); table.setRowHeight(20); JScrollPane scrollPane = new JScrollPane(table); initColumnSizes(table); setUpSportColumn(table, table.getColumnModel().getColumn(2)); add(scrollPane, BorderLayout.CENTER); JButton resetButton = new JButton("Reset to default"); resetButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { for (int i = 0; i &lt; table.getRowCount(); i++) { table.getModel().setValueAt("None of the above", i, 2); } } }); add(resetButton, BorderLayout.SOUTH); } private void initColumnSizes(JTable table) { MyTableModel model = (MyTableModel) table.getModel(); TableColumn column = null; Component comp = null; int headerWidth = 0; int cellWidth = 0; Object[] longValues = model.longValues; TableCellRenderer headerRenderer = table.getTableHeader().getDefaultRenderer(); for (int i = 0; i &lt; 5; i++) { column = table.getColumnModel().getColumn(i); comp = headerRenderer.getTableCellRendererComponent(null, column.getHeaderValue(), false, false, 0, 0); headerWidth = comp.getPreferredSize().width; comp = table.getDefaultRenderer(model.getColumnClass(i)).getTableCellRendererComponent(table, longValues[i], false, false, 0, i); cellWidth = comp.getPreferredSize().width; column.setPreferredWidth(Math.max(headerWidth, cellWidth)); } } private void setUpSportColumn(JTable table, TableColumn sportColumn) { ArrayList&lt;String&gt; listSomeString = new ArrayList&lt;String&gt;(); listSomeString.add("Snowboarding"); listSomeString.add("Rowing"); listSomeString.add("Knitting"); listSomeString.add("Speed reading"); listSomeString.add("Pool"); listSomeString.add("None of the above"); JComboBox comboBox = new JComboBox(); comboBox.addItem(new Item(1, "-")); comboBox.addItem(new Item(2, "Snowboarding")); comboBox.addItem(new Item(3, "Rowing")); comboBox.addItem(new Item(4, "Knitting")); comboBox.addItem(new Item(5, "Speed reading")); comboBox.addItem(new Item(6, "Pool")); comboBox.addItem(new Item(7, "None of the above")); comboBox.setMaximumRowCount(3); comboBox.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { JComboBox comboBox = (JComboBox) e.getSource(); Item item = (Item) comboBox.getSelectedItem(); System.out.println(item.getId() + " : " + item.getDescription()); } }); comboBox.setRenderer(new ItemRenderer()); sportColumn.setCellEditor(new DefaultCellEditor(comboBox)); DefaultTableCellRenderer renderer = new DefaultTableCellRenderer(); renderer.setToolTipText("Click for combo box"); sportColumn.setCellRenderer(renderer); } class ItemRenderer extends BasicComboBoxRenderer { @Override public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus); if (value != null) { Item item = (Item) value; setText(item.getDescription().toUpperCase()); } if (index == -1) { Item item = (Item) value; setText("" + item.getId()); } return this; } } class Item { private int id; private String description; public Item(int id, String description) { this.id = id; this.description = description; } public int getId() { return id; } public String getDescription() { return description; } @Override public String toString() { return description; } } class MyTableModel extends AbstractTableModel { private static final long serialVersionUID = 1L; private String[] columnNames = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"}; private Object[][] data = {{"Kathy", "Smith", "Snowboarding", new Integer(5), false}, {"John", "Doe", "Rowing", new Integer(3), true}, {"Sue", "Black", "Knitting", new Integer(2), false}, {"Jane", "White", "Speed reading", new Integer(20), true}, {"Joe", "Brown", "Pool", new Integer(10), false}}; public final Object[] longValues = {"Jane", "Kathy", "None of the above", new Integer(20), Boolean.TRUE}; @Override public int getColumnCount() { return columnNames.length; } @Override public int getRowCount() { return data.length; } @Override public String getColumnName(int col) { return columnNames[col]; } @Override public Object getValueAt(int row, int col) { return data[row][col]; } @Override public Class&lt;?&gt; getColumnClass(int c) { return getValueAt(0, c).getClass(); } @Override public boolean isCellEditable(int row, int col) { if (col &lt; 2) { return false; } else { return true; } } @Override public void setValueAt(Object value, int row, int col) { data[row][col] = value; fireTableCellUpdated(row, col); System.out.println("New value of data: " + getValueAt(row, col)); } } private static void createAndShowGUI() { JFrame frame = new JFrame("TableRenderDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); TableRenderDemo newContentPane = new TableRenderDemo(); frame.setContentPane(newContentPane); frame.pack(); frame.setVisible(true); } public static void main(String[] args) { javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { createAndShowGUI(); } }); } } </code></pre>
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    1. POUsing JComboBox with custom renderer as JTable cell renderer/editor (architecture)
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    1. POUsing JComboBox with custom renderer as JTable cell renderer/editor (architecture)
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    1. COThat cleared up a lot of my confusion. I think I'll just extend `JComboBox` and have an inner `Renderer` with a `HashMap` of the style for each type of `String` used.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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