JTable - Problems with Boolean.class Cell Renderer and Nimbus Look and Feel

Question

I am using a JTable to visualize some data. One column ist destined to show boolean data through a checkbox. I achieved this by returning Boolean.class from my overriden getColumnClass() function in my table model. Unfortunately this results in a cell with a checkbox but without a background color appropriate for the current row. I fixed this by using the answer from this post: JTable - Boolean Cell Type - Background Now I was trying to increase the contrast of the alternate rows. I achieved this by setting the appropriate property of the Nimbus LAF, which I am using. ``` UIDefaults defaults = UIManager.getLookAndFeelDefaults(); defaults.put("Table.alternateRowColor", new Color(217, 217, 217)); ``` As you see, the background of the Boolean cells is still the old Nimbus `Table.alternateRowColor` color. Is there a way to change this? Am I doing this completely wrong? Is there a better way to achieve alternating background color and more contrast? EDIT caused on java version "1.7.0_17" J…

Accepted Answer

I was (finally) able to get it to work. The secret was to change the defaults BEFORE you create anything.

```
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.EventQueue;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.plaf.UIResource;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellRenderer;

public class TestTable10 {

public static void main(String[] args) {
        new TestTable10();
    }

public TestTable10() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

UIManager.getLookAndFeelDefaults().put("Table.alternateRowColor", Color.RED);

JTable table = new JTable(new MyModel());
                ((JComponent) table.getDefaultRenderer(Boolean.class)).setOpaque(true);

JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new JScrollPane(table));
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

public class MyModel extends AbstractTableModel {

@Override
        public int getRowCount() {
            return 10;
        }

@Override
        public int getColumnCount() {
            return 2;
        }

@Override
        public Object getValueAt(int rowIndex, int columnIndex) {
            switch (columnIndex) {
                case 0:
                    return "Hello";
                case 1:
                    return true;
            }
            return "?";
        }

@Override
        public Class<?> getColumnClass(int columnIndex) {
            return columnIndex == 0 ? String.class : Boolean.class;
        }
    }

}
```

JTable - Problems with Boolean.class Cell Renderer and Nimbus Look and Feel

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