[Java] Font differenti in un JComboBox

[Fire Fox II]

Salve raga

come da titolo, ho creato un JComboBox e dovrei fare in modo che alcuni elementi vengano evidenziati in grassetto

Come posso cambiare il font solo per tali elementi?

Thanks

[franksisca]

semplicemente ridefinendo il componente:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package graphicComponent;

import core.*;
import java.awt.Color;
import java.awt.Component;
import java.awt.Rectangle;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;

/**
 *
 * @author Utente1
 */
public class GraficaJListGenerale extends JLabel implements ListCellRenderer {

    private static final Border NO_FOCUS_BORDER = new EmptyBorder(1, 1, 1, 1);
    private Border insideBorder;

    public GraficaJListGenerale() {
        this(0, 0, 0, 0);
    }

    public GraficaJListGenerale(int padding) {
        this(padding, padding, padding, padding);
    }

    public GraficaJListGenerale(int topPadding, int rightPadding, int bottomPadding, int leftPadding) {
        insideBorder = BorderFactory.createEmptyBorder(topPadding, leftPadding, bottomPadding, rightPadding);
        setOpaque(true);
    }

    @Override
    public Component getListCellRendererComponent(JList list, Object value,
            int index, boolean isSelected, boolean hasFocus) {
        /*
         *
         * // Sets text and icon on 'this' JLabel. setText(tai.getText());
         * setIcon(tai.getIcon());
         *
         */
        if (value instanceof PersonaGenerica) {
            PersonaGenerica persona = (PersonaGenerica) value;
            this.setText(persona.getNome() + " " + persona.getCognome());
            this.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/pers.gif")));
        }
        if (value instanceof AssociatoFederimprese) {
            AssociatoFederimprese persona = (AssociatoFederimprese) value;
            this.setText(persona.getNomeImpresa());
            this.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/az.png")));
        }
        if (value instanceof Referente) {
            Referente persona = (Referente) value;
            this.setText(persona.getNome() + " " + persona.getCognome());
            this.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/ref.gif")));
        }
        if (value instanceof Servizio) {
            Servizio persona = (Servizio) value;
            this.setText(persona.getNome());
            this.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/serv.gif")));
        }
        if (value instanceof Scadenza) {
            Scadenza persona = (Scadenza) value;
            this.setText(persona.getNome());
            this.setIcon(new javax.swing.ImageIcon(getClass().getResource("/images/scadenza.gif")));
        }
        if (isSelected) {
            setBackground(new Color(148, 203, 227));
            setForeground(new Color(0, 0, 131));
        } else {
            if (index % 2 == 0) {
                setBackground(UIManager.getColor("Button.disabledForeground"));
            } else {
                setBackground(UIManager.getColor("Button.shadow"));
            }
            setForeground(Color.WHITE);
        }

        Border outsideBorder;

        if (hasFocus) {
            outsideBorder = UIManager.getBorder("List.focusCellHighlightBorder");
        } else {
            outsideBorder = NO_FOCUS_BORDER;
        }

        setBorder(BorderFactory.createCompoundBorder(outsideBorder, insideBorder));
        setComponentOrientation(list.getComponentOrientation());
        setEnabled(list.isEnabled());
        setFont(list.getFont());

        return this;
    }

    // The following methods are overridden to be empty for performance
    // reasons. If you want to understand better why, please read:
    //
    // http://java.sun.com/javase/6/docs/api/javax/swing/DefaultListCellRenderer.html#override
    @Override
    public void validate() {
    }

    @Override
    public void invalidate() {
    }

    @Override
    public void repaint() {
    }

    @Override
    public void revalidate() {
    }

    @Override
    public void repaint(long tm, int x, int y, int width, int height) {
    }

    @Override
    public void repaint(Rectangle r) {
    }
}

qui in base al tipo associavo una icona e colore diverso...puoi modificarlo a piacimento