I'm trying to put background color on the JTable header but it seems that it doesnt change the header's color this is my code for my JTable.. what am I doing wrong?
Color headerColor = new Color(25, 78, 132);
itemTable = new JTable(){
public boolean isCellEditable(int row, int column) {
return false;
};
Color rowColor1 = new Color(99, 154, 206);
Color rowColor2 = new Color(148, 186, 231);
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component stamp = super.prepareRenderer(renderer, row, column);
if (row % 2 == 0)
stamp.setBackground(rowColor1);
else
stamp.setBackground(rowColor2);
return stamp;
}
};
JTableHeader Header = itemTable.getTableHeader();
Header.setBackground(headerColor);
Header.setReorderingAllowed(false);
itemTable.setFont(fpanelItemTable);
itemTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
//itemTable.setPreferredScrollableViewportSize(new Dimension(200,200));
//itemTable.setFillsViewportHeight(true);
itemTable.setAutoCreateRowSorter(true);
where should I put it? I want my header and rows to have color
- for example, one of three possible ways
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
public class SelectedTableHeader {
private JFrame frame = new JFrame("Table Demo");
private JTableHeader header;
private Object selectedColumn = null;
private String[] columnNames = {"String", "Integer", "Float", "Double", "Locale & Double", "Boolean"};
private Object[][] data = {
{"aaa", new Integer(12), new Float(12.15), new Double(100.05), new Double(12.05), true},
{"bbb", new Integer(5), new Float(7.154), new Double(6.1555), new Double(417.55), false},
{"CCC", new Integer(92), new Float(0.1135), new Double(3.1455), new Double(11.05), true},
{"ddd", new Integer(12), new Float(31.15), new Double(10.05), new Double(23.05), true},
{"eee", new Integer(5), new Float(5.154), new Double(16.1555), new Double(17.55), false},
{"fff", new Integer(92), new Float(4.1135), new Double(31.1455), new Double(3.05), true}};
private TableModel model = new DefaultTableModel(data, columnNames) {
private static final long serialVersionUID = 1L;
@Override
public Class<?> getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
};
private JTable table = new JTable(model) {
private static final long serialVersionUID = 1L;
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component c = super.prepareRenderer(renderer, row, column);
int firstRow = 0;
int secondRow = 0;
int lastRow = table.getRowCount() - 1;
if (row == lastRow) {
((JComponent) c).setBackground(Color.GREEN);
} else if (row == firstRow) {
((JComponent) c).setBackground(Color.YELLOW);
} else {
((JComponent) c).setBackground(table.getBackground());
}
return c;
}
};
public SelectedTableHeader() {
header = table.getTableHeader();
header.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
JTableHeader h = (JTableHeader) e.getSource();
int i = h.columnAtPoint(e.getPoint());
Object o = h.getColumnModel().getColumn(i).getHeaderValue();
if (i < 0) {
selectedColumn = null;
return;
}
selectedColumn = o;
h.requestFocusInWindow();
}
});
final TableCellRenderer hr = table.getTableHeader().getDefaultRenderer();
header.setDefaultRenderer(new TableCellRenderer() {
private JLabel lbl;
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
if (selectedColumn == value) {
lbl = (JLabel) hr.getTableCellRendererComponent(table, value,
true, true, row, column);
lbl.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createEmptyBorder(1, 1, 1, 1),
BorderFactory.createLineBorder(Color.red, 1)));
lbl.setHorizontalAlignment(SwingConstants.LEFT);
lbl.setBackground(lbl.getBackground());
} else {
lbl = (JLabel) hr.getTableCellRendererComponent(table, value,
false, false, row, column);
lbl.setBorder(BorderFactory.createCompoundBorder(
lbl.getBorder(),
BorderFactory.createEmptyBorder(1, 1, 1, 1)));
lbl.setHorizontalAlignment(SwingConstants.CENTER);
lbl.setBackground(Color.ORANGE);
}
if (column == 0) {
lbl.setForeground(Color.red);
} else {
lbl.setForeground(header.getForeground());
}
/*return (value == selectedColumn) ? hr.getTableCellRendererComponent(
table, value, true, true, row, column) : hr.getTableCellRendererComponent(
table, value, false, false, row, column);*/
return lbl;
}
});
table.setRowHeight(20);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scroll = new JScrollPane(table);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(scroll);
frame.pack();
frame.setLocation(150, 150);
frame.setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
SelectedTableHeader sTH = new SelectedTableHeader();
}
});
}
}
来源：https://stackoverflow.com/questions/19207756/jtable-header-background-color