??? ?? ??: ? ?? ? JTable ?? ??

??? ?? ? ????? JTable? ???? ?? ?? ???? ???? ?? ?????. ? ?? ?. ???? ? ??? ?? ?? ??? ?????.

??:

??? ?? ? ???? ??? ??? JTable ?? ?? JTextField ???? ??? ? ?? ??? ??? ?????. ?? ? ???

???:

??? ? ? ?? ? ???? ?????? ?? ??? ??? ?????. ? ??? ????? ??? ??? ??? ? ? ???? ????? ?????.

??:

• ??? ??? ????? ?? ???? ?????( ?? ??, MoneyRenderer).
• ?? ???(?: MoneyEditor)? ???? ?? ???? ????? ?? getCellEditorValue() ? getTableCellEditorComponent() ???.
• ????? ??? ??? ????? ???? getTableCellEditorComponent() ???(?: editStopped())? ??????.
• ??? ???? CurrentRenderer ? MoneyEditor ???? JTable? ?? ??? ?????. ? ?? ? ?? ???? ?? ???? ??? ???? ??????.

?? ??:

??? ?? ??? JTable? ???? ??? ?? ??? ?????. ? ?? ??? ??? ???? ?? ?? ? ??:

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.text.NumberFormat;
import java.util.EventObject;

public class RenderEditNumber extends JPanel {

    private NumberFormat nf = NumberFormat.getCurrencyInstance();

    public RenderEditNumber() {
        DefaultTableModel model = new DefaultTableModel(
            new String[]{"Amount"}, 0) {

            @Override
            public Class<?> getColumnClass(int columnIndex) {
                return Double.class;
            }
        };
        for (int i = 0; i < 16; i++) {
            model.addRow(new Object[]{Double.valueOf(i)});
        }
        JTable table = new JTable(model) {

            @Override // Always selectAll()
            public boolean editCellAt(int row, int column, EventObject e) {
                boolean result = super.editCellAt(row, column, e);
                final Component editor = getEditorComponent();
                if (editor == null || !(editor instanceof JTextComponent)) {
                    return result;
                }
                EventQueue.invokeLater(new Runnable() {

                    @Override
                    public void run() {
                        ((JTextComponent) editor).selectAll();
                    }
                });
                return result;
            }
        };
        table.setDefaultRenderer(Double.class, new CurrencyRenderer(nf));
        table.setDefaultEditor(Double.class, new CurrencyEditor(nf));
        add(new JScrollPane(table));
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(() -> new RenderEditNumber().display());
    }
}

class CurrencyRenderer extends DefaultTableCellRenderer {

    private NumberFormat formatter;

    public CurrencyRenderer(NumberFormat formatter) {
        this.formatter = formatter;
        setHorizontalAlignment(JLabel.RIGHT);
    }

    @Override
    public void setValue(Object value) {
        setText((value == null) ? "" : formatter.format(value));
    }
}

class CurrencyEditor extends DefaultCellEditor {

    private NumberFormat formatter;
    private JTextField textField;

    public CurrencyEditor(NumberFormat formatter) {
        super(new JTextField());
        this.formatter = formatter;
        textField = (JTextField) getComponent();
        textField.setHorizontalAlignment(JTextField.RIGHT);
        textField.setBorder(null);
    }

    @Override
    public Object getCellEditorValue() {
        try {
            return new Double(textField.getText());
        } catch (NumberFormatException e) {
            return Double.valueOf(0);
        }
    }

    @Override
    public Component getTableCellEditorComponent(JTable table,
                                                Object value, boolean isSelected, int row, int column) {
        textField.setText((value == null)
                ? "" : formatter.format((Double) value));
        return textField;
    }
}

? ?? ??? ???? JTable ?? ?? ??? ??? ???? ????? ??? ??? ??? ??? ??? ??? ?????.

? ??? ?? ? ??? ?? JTable ? ???? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!