Trying to create JTable with proper row header
Solution 1:
Using this HeaderRenderer
as the first row column renderer may produce the effect you want:
Addendum: I've updated the example to reflect your sscce with a manual layout. My platform's getSystemLookAndFeelClassName()
is com.apple.laf.AquaLookAndFeel
, so I'm not seeing the same result. Two observations: You've already setAutoCreateRowSorter(false)
to prevent the sorting widget from proliferating, and Nimbus retains it alternating row highlight.
import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
public class MyTableExample3 extends JFrame {
private JScrollPane scrollPane;
private JTable table;
public MyTableExample3() {
initComponents();
}
@SuppressWarnings("unchecked")
private void initComponents() {
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
table = new javax.swing.JTable() {
@Override
public Component prepareRenderer(
TableCellRenderer renderer, int row, int col) {
if (col == 0) {
return this.getTableHeader().getDefaultRenderer()
.getTableCellRendererComponent(this, this.getValueAt(
row, col), false, false, row, col);
} else {
return super.prepareRenderer(renderer, row, col);
}
}
};
table.setAutoCreateRowSorter(false);
final JTableHeader header = table.getTableHeader();
header.setDefaultRenderer(new HeaderRenderer(table));
table.setModel(new javax.swing.table.DefaultTableModel(
new Object[][]{
{"Row 1", "Data 2", "Data 3", "Data 4", "Data 5"},
{"Row 2", "Data 6", "Data 7", "Data 8", "Data 9"},
{"Row 3", "Data 10", "Data 11", "Data 12", "Data 13"}
},
new String[]{
"", "Col 1", "Col 2", "Col 3", "Col 4"
}));
scrollPane = new JScrollPane(table);
this.add(scrollPane);
pack();
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new MyTableExample3().setVisible(true);
}
});
}
private static class HeaderRenderer implements TableCellRenderer {
TableCellRenderer renderer;
public HeaderRenderer(JTable table) {
renderer = table.getTableHeader().getDefaultRenderer();
}
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int col) {
return renderer.getTableCellRendererComponent(
table, value, isSelected, hasFocus, row, col);
}
}
}
Solution 2:
maybe
import java.awt.*;
import java.awt.event.ActionEvent;
import javax.swing.*;
import javax.swing.UIManager.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class JTableRowHeader {
private JFrame frame = new JFrame("JTable RowHeader");
private JScrollPane scrollPane;
private JTable table;
private DefaultTableModel model;
private TableRowSorter<TableModel> sorter;
private JTable headerTable;
public JTableRowHeader() {
table = new JTable(4, 4);
for (int i = 0; i < table.getRowCount(); i++) {
table.setValueAt(i, i, 0);
}
sorter = new TableRowSorter<TableModel>(table.getModel());
table.setRowSorter(sorter);
model = new DefaultTableModel() {
private static final long serialVersionUID = 1L;
@Override
public int getColumnCount() {
return 1;
}
@Override
public boolean isCellEditable(int row, int col) {
return false;
}
@Override
public int getRowCount() {
return table.getRowCount();
}
@Override
public Class<?> getColumnClass(int colNum) {
switch (colNum) {
case 0:
return String.class;
default:
return super.getColumnClass(colNum);
}
}
};
headerTable = new JTable(model);
for (int i = 0; i < table.getRowCount(); i++) {
headerTable.setValueAt("Row " + (i + 1), i, 0);
}
headerTable.setShowGrid(false);
headerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
headerTable.setPreferredScrollableViewportSize(new Dimension(50, 0));
headerTable.getColumnModel().getColumn(0).setPreferredWidth(50);
headerTable.getColumnModel().getColumn(0).setCellRenderer(new TableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable x, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
boolean selected = table.getSelectionModel().isSelectedIndex(row);
Component component = table.getTableHeader().getDefaultRenderer().getTableCellRendererComponent(table, value, false, false, -1, -2);
((JLabel) component).setHorizontalAlignment(SwingConstants.CENTER);
if (selected) {
component.setFont(component.getFont().deriveFont(Font.BOLD));
component.setForeground(Color.red);
} else {
component.setFont(component.getFont().deriveFont(Font.PLAIN));
}
return component;
}
});
table.getRowSorter().addRowSorterListener(new RowSorterListener() {
@Override
public void sorterChanged(RowSorterEvent e) {
model.fireTableDataChanged();
}
});
table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent e) {
model.fireTableRowsUpdated(0, model.getRowCount() - 1);
}
});
scrollPane = new JScrollPane(table);
scrollPane.setRowHeaderView(headerTable);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.add(scrollPane);
frame.add(new JButton(new AbstractAction("Toggle filter") {
private static final long serialVersionUID = 1L;
private RowFilter<TableModel, Object> filter = new RowFilter<TableModel, Object>() {
@Override
public boolean include(javax.swing.RowFilter.Entry<? extends TableModel, ? extends Object> entry) {
return ((Number) entry.getValue(0)).intValue() % 2 == 0;
}
};
@Override
public void actionPerformed(ActionEvent e) {
if (sorter.getRowFilter() != null) {
sorter.setRowFilter(null);
} else {
sorter.setRowFilter(filter);
}
}
}), BorderLayout.SOUTH);
frame.pack();
frame.setLocation(150, 150);
frame.setVisible(true);
}
public static void main(String[] args) {
try {// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if (info.getName().equals("Nimbus")) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception e) {
//e.printStackTrace();
}
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JTableRowHeader TestTableRowHeader = new JTableRowHeader();
}
});
}
}
Here it is with system Look and Feel-