Java SE (Java Platform, Standard Edition)

Hi everybody:
I use this code for adjust the alignment of the cells in JTable from left to right but I got nothing.
I don't know if there is something wrong in the code or I use a wrong way for do it...!!?
I hope you help me.
This is the code

public class RightTableCellRenderer extends DefaultTableCellRenderer{
	
	public RightTableCellRenderer() {
		setHorizontalAlignment(JLabel.RIGHT);
	}
}

public class JoTable extends JTable {

	public JoTable() {
		setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
		setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
		setTableCellAligment(JLabel.CENTER);
		updateUI();
	}

	public void setTableCellAligment(int alignment) {
		RightTableCellRenderer cellRenderer = new RightTableCellRenderer();
		for (int i = 0; i < getColumnCount(); i++) {
			this.setDefaultRenderer(getColumnClass(i), cellRenderer);
		}
	}
}

Then I use the JoTable in other class and fill it with data but the data still left alignment....?
Please help me
Thanks