编写单元格渲染器并使用:
Renderer返回值的具体情况会影响结果,但没有Renderer也可以正常工作。
setIntercellSpacing()
setShowGrid()
![enter image description here](https://istack.dev59.com/qM2Eg.webp)
import java.awt.*;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
public class TableExample {
public TableExample() {
Object[][] data1 = new Object[50][5];
for (int i = 0; i < data1.length; i++) {
data1[i][0] = "Company # " + (i + 1);
for (int j = 1; j < data1[i].length; j++) {
data1[i][j] = "" + (i + 1) + ", " + j;
}
}
String[] headers = {"Col 1", "Col 2", "Col 3", "Col 4", "Col 5"};
DefaultTableModel model1 = new DefaultTableModel(data1, headers);
final JTable jTable3 = new TableBackroundPaint0(data1, headers);
jTable3.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
jTable3.setModel(model1);
final JScrollPane sp3 = new JScrollPane();
sp3.setViewportView(jTable3);
jTable3.setIntercellSpacing(new Dimension(0, 0));
jTable3.setShowGrid(false);
JFrame frame = new JFrame("tableSelection");
frame.add(sp3);
frame.setSize(new Dimension(600, 200));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
TableExample te = new TableExample();
}
});
}
}
class TableBackroundPaint0 extends JTable {
private static final long serialVersionUID = 1L;
TableBackroundPaint0(Object[][] data, Object[] head) {
super(data, head);
setOpaque(false);
((JComponent) getDefaultRenderer(Object.class)).setOpaque(false);
}
@Override
public void paintComponent(Graphics g) {
Color background = new Color(168, 210, 241);
Color controlColor = new Color(230, 240, 230);
int width = getWidth();
int height = getHeight();
Graphics2D g2 = (Graphics2D) g;
Paint oldPaint = g2.getPaint();
g2.setPaint(new GradientPaint(0, 0, background, width, 0, controlColor));
g2.fillRect(0, 0, width, height);
g2.setPaint(oldPaint);
for (int row : getSelectedRows()) {
Rectangle start = getCellRect(row, 0, true);
Rectangle end = getCellRect(row, getColumnCount() - 1, true);
g2.setPaint(new GradientPaint(start.x, 0, controlColor, (int) ((end.x + end.width - start.x) * 1.25), 0, Color.orange));
g2.fillRect(start.x, start.y, end.x + end.width - start.x, start.height);
}
super.paintComponent(g);
}
}
setIntercellSpacing()
方法,因为它基本上在当前的TableColumnModel
上调用setColumnMargin()
,并在JTable
本身上调用setRowMargin()
。 - Hendrik