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Icon on JTable column header

The following code will add icon to column row header to JTable. It used TableCellRenderer to change the header's look and feel. Or maybe you want to download the 2 images used by the following program.

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import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.AbstractListModel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListCellRenderer;
import javax.swing.ListModel;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.*;
import javax.swing.*;

class myTableHeader implements TableCellRenderer
{
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
JLabel label=null;

switch(column)
{
case 0:
label=new JLabel(value.toString (),new ImageIcon("dragonfly.gif"),JLabel.CENTER); //set your image here
break;
case 3:
label=new JLabel(value.toString (),new ImageIcon("dot.gif"),JLabel.CENTER); //set your image here
break;
default:
label=new JLabel(value.toString (),JLabel.CENTER);
break;
}

label.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return label;
}
}

public class IconHeader
{
//icon column header example
public static void main(String[] args) {
JFrame frame=new JFrame("Row Header Example");
frame.setSize(300, 150);

frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});

//create a table
String headers[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
DefaultTableModel dm = new DefaultTableModel(headers.length , 6);
JTable table = new JTable(dm);
JTableHeader header=table.getTableHeader();
header.setReorderingAllowed(false);
header.setDefaultRenderer(new myTableHeader());

JScrollPane scroll=new JScrollPane(table);
frame.getContentPane().add(scroll);
//table header

frame.setVisible(true);
}
}




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Best books about JAVA programming from Amazon
Professional Java, JDK 5 Edition (Paperback Simply Java Programming: An Application-Driven Tutorial Approach (Paperback) Effective Java Programming Language Guide (Paperback) Head First Java, 2nd Edition (Paperback) Java : An Introduction to Problem Solving and Programming (4th Edition)

 

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