[英]How do I set the JTable column and row color?
如何設置JTable
列和行顏色?
這是一個簡短的例子。
import java.awt.Color;
import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
public class JTableExample extends JFrame {
String[][] data = {{"John", "Sutherland", "Student"},
{"George", "Davies", "Student"},
{"Melissa", "Anderson", "Associate"},
{"Stergios", "Maglaras", "Developer"},
};
String[] fields = {"Name", "Surname", "Status"};
public static void main(String[] args) {
new JTableExample();
}
public JTableExample() {
super();
setSize(150, 150);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
dispose();
System.exit(0);
}
});
init();
pack();
setVisible(true);
}
private void init() {
final CustomCellRenderer renderer = new CustomCellRenderer();
JTable jt = new JTable(data, fields) {
@Override
public TableCellRenderer getCellRenderer(int row, int column) {
return renderer;
}
};
JScrollPane pane = new JScrollPane(jt);
getContentPane().add(pane);
}
/**
* @author suhas, orwellophile
*
*/
private class CustomCellRenderer extends DefaultTableCellRenderer {
/**
* @see javax.swing.table.DefaultTableCellRenderer#getTableCellRendererComponent(JTable, Object, boolean, boolean, int, int)
*/
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
Component rendererComp = super.getTableCellRendererComponent(table, value,
isSelected, hasFocus, row, column);
// Very important to handle selected items (render them inversely colored)
if (isSelected) {
rendererComp.setBackground(getHuedColor(row).darker().darker());
rendererComp.setForeground(getHuedColor(row).brighter().brighter());
}
else {
rendererComp.setBackground(getHuedColor(row).brighter().brighter());
rendererComp.setForeground(getHuedColor(row).darker().darker());
}
return rendererComp;
}
public Color getHuedColor(int hue) {
return new Color(
Color.HSBtoRGB(85 / 360f * hue, 0.7f, 1.0f
));
}
}
}
回答一個心不在焉的提問者一個模糊的問題需要一些善意(和空閑時間)。
對於列,您可以在列上設置擴展DefaultTableCellRenderer
(擴展 JLabel)的單元格渲染器,然后設置渲染器的前景和背景。
對於行,您必須在單元格渲染器的getTableCellRendererComponent
。
如果您需要任何不重要的東西(例如交替行背景),您應該使用靈活的自定義渲染器。 有無數免費和商業的表格組件提供着色和 JTable 應有的一切,例如JIDE Grids (不是免費的,但功能非常強大)。
DefaultTableCellRenderer rendar1 = new DefaultTableCellRenderer();
rendar1.setForeground(Color.red);
jTable1.getColumnModel().getColumn(0).setCellRenderer(rendar1);
列將此代碼更改為構造函數的顏色
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