Format JTable column for currency

Question

I have a JTable and I want a particular column to formatted as currency. If i put a number on that column like 3 it will show $3.00. i used TableCellRenderer but i'm not getting into it. Can anyone help ?

Thanks in advance.

Answer 1

Here is a simple example. I don't know whether it works (if not - try to fix it).

import java.awt.Component;
import java.text.NumberFormat;

import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
public class CurrencyTableCellRenderer extends DefaultTableCellRenderer {

    private static final NumberFormat FORMAT = NumberFormat.getCurrencyInstance();

    @Override
    public final Component getTableCellRendererComponent(JTable table, Object value,
            boolean isSelected, boolean hasFocus, int row, int column) {
        final Component result = super.getTableCellRendererComponent(table, value,
                isSelected, hasFocus, row, column);
        if (value instanceof Number) {
            setHorizontalAlignment(JLabel.RIGHT);
            setText(FORMAT.format(value));
        } else {
            setText("");
        }
        return result;
    }
}

To add it:

table.getColumnModel().getColumn(column).setCellRenderer(new CurrencyTableCellRenderer());