Vertical headers in JTable?

Is there a way to rotate 90º the column headers of a JT开发者_JAVA百科able?

Check out Darryl's Vertical Table Header Cell Renderer.

This is little tricky. At first, you need to cast JTable headers to JLabels. It's just like

 ((JLabel)table.getTableHeader()

Then rotate JLabels. It's already answered here on StackOverflow

Maybe this helps, I haven't tested it though:

class RotatedTableCellRenderer extends JLabel implements TableCellRenderer {  
    protected int m_degreesRotation = -90;  

    public RotatedTableCellRenderer(int degrees) {  
        m_degreesRotation = degrees;  
    }  

    public Component getTableCellRendererComponent(JTable table, Object value,   
        boolean isSelected, boolean hasFocus, int row, int column) {  

        try {  
            this.setText(value.toString());  
        } catch(NullPointerException ne) {  
                this.setText("Nullvalue");  
        }  

        return this;  
    }  

    public void paint(Graphics g) {  
        Graphics2D g2 = (Graphics2D)g;  
        g2.setClip(0,0,500,500);  
        g2.setColor(new Color(60,179,113));  
        g2.setFont(new Font("Arial",Font.BOLD,12));  
        AffineTransform at = new AffineTransform();  
        at.setToTranslation(this.getWidth(), this.getHeight());  
        g2.transform(at);  
        double radianAngle = ( ((double)m_degreesRotation) / ((double)180) ) * Math.PI;  
        at.setToRotation(radianAngle);  
        g2.transform(at);  
        g2.drawString(this.getText(), 0.0f, 0.0f);  
    }  
}  

This is not my own, taken from here