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How can we set the background/foreground color for individual column of a JTable in Java?
A JTable is a subclass of JComponent class for displaying complex data structures. A JTable component can follow the Model View Controller (MVC) design pattern for displaying the data in rows and columns. A JTable can generate TableModelListener, TableColumnModelListener, ListSelectionListener, CellEditorListener, RowSorterListener interfaces. We can change the background and foreground color for each column of a JTable by customizing the DefaultTableCellRenderer class and it has only one method getTableCellRendererComponent() to implement it.
Example
import java.awt.*; import javax.swing.*; import javax.swing.table.*; public class JTableColumnColorTest extends JFrame { private JTable table; private TableColumn tColumn; public JTableColumnColorTest() { setTitle("JTableColumnColor Test"); table = new JTable(10, 5); tColumn = table.getColumnModel().getColumn(2); tColumn.setCellRenderer(new ColumnColorRenderer(Color.lightGray, Color.red)); add(new JScrollPane(table), BorderLayout.CENTER); setSize(400, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLocationRelativeTo(null); setVisible(true); } public static void main(String [] args) { new JTableColumnColorTest(); } } // Customize the code to set the background and foreground color for each column of a JTable class ColumnColorRenderer extends DefaultTableCellRenderer { Color backgroundColor, foregroundColor; public ColumnColorRenderer(Color backgroundColor, Color foregroundColor) { super(); this.backgroundColor = backgroundColor; this.foregroundColor = foregroundColor; } public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { Component cell = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); cell.setBackground(backgroundColor); cell.setForeground(foregroundColor); return cell; } }
Output
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