我可以在JavaJFrame中將多個相同型別的動作事件合并為一個嗎？

我有一個 java 專案，我試圖在其中制作類似于 CSS 中的懸停效果，每次滑鼠經過 jlabel 時更改顏色（圖示），但我意識到我正在使用幾種方法來做同樣的事情.

我的問題是是否有可能將所有這些都統一在一個方法中，或者是否有一種更簡單的方法來使用庫或類似的東西來制作這種影片。

private void lblPersonalizarMouseExited(java.awt.event.MouseEvent evt) {                                            
    lblPersonalizar.setIcon(icono_personalizari);
}                                           

private void lblPersonalizarMouseEntered(java.awt.event.MouseEvent evt) {                                             
    lblPersonalizar.setIcon(icono_personalizara);
}                                            

private void lblNuevaCompraMouseExited(java.awt.event.MouseEvent evt) {                                           
    lblNuevaCompra.setIcon(icono_comprai);
}                                          

private void lblNuevaCompraMouseEntered(java.awt.event.MouseEvent evt) {                                            
    lblNuevaCompra.setIcon(icono_compraa);
}                                           

private void lblUsuarioMouseEntered(java.awt.event.MouseEvent evt) {                                        
    lblUsuario.setIcon(icono_usuarioa);
}                                       

private void lblUsuarioMouseExited(java.awt.event.MouseEvent evt) {                                       
    lblUsuario.setIcon(icono_usuarioi);
}                                      

private void lblFacturasMouseEntered(java.awt.event.MouseEvent evt) {                                         
    lblFacturas.setIcon(icono_facturasa);
}                                        

private void lblFacturasMouseExited(java.awt.event.MouseEvent evt) {                                        
    lblFacturas.setIcon(icono_facturasi);
}                                       

private void lblMaterialesMouseEntered(java.awt.event.MouseEvent evt) {                                           
    lblMateriales.setIcon(icono_materialesa);
}                                          

private void lblMaterialesMouseExited(java.awt.event.MouseEvent evt) {                                          
    lblMateriales.setIcon(icono_materialesi);
}                                         

private void lblAyudaMouseEntered(java.awt.event.MouseEvent evt) {                                      
    lblAyuda.setIcon(icono_ayudaa);
}                                     

private void lblAyudaMouseExited(java.awt.event.MouseEvent evt) {                                     
    lblAyuda.setIcon(icono_ayudai);
}   
                             

uj5u.com熱心網友回復：

JButton 支持影像翻轉，這將是一個更簡單的解決方案

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main {

    public static void main(String[] args) {
        new Main();
    }

    public Main() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    JFrame frame = new JFrame();
                    frame.add(new TestPane());
                    frame.pack();
                    frame.setLocationRelativeTo(null);
                    frame.setVisible(true);
                } catch (IOException ex) {
                    Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }

    public class TestPane extends JPanel {

        public TestPane() throws IOException {
            setLayout(new GridBagLayout());
            setBackground(Color.BLACK);

            JButton bagButton = makeButton(new ImageIcon(ImageIO.read(getClass().getResource("/images/Bag.png"))), new ImageIcon(ImageIO.read(getClass().getResource("/images/Bag-Selected.png"))));
            JButton editButton = makeButton(new ImageIcon(ImageIO.read(getClass().getResource("/images/Edit.png"))), new ImageIcon(ImageIO.read(getClass().getResource("/images/Edit-Selected.png"))));
            JButton settingsButton = makeButton(new ImageIcon(ImageIO.read(getClass().getResource("/images/Settings.png"))), new ImageIcon(ImageIO.read(getClass().getResource("/images/Settings-Selected.png"))));

            add(bagButton);
            add(editButton);
            add(settingsButton);

            bagButton.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    System.out.println("Bag was selected");
                }
            });

            editButton.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    System.out.println("Edit was selected");
                }
            });

            settingsButton.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    System.out.println("Settings was selected");
                }
            });
        }

        protected JButton makeButton(Icon icon, Icon rollOverIcon) {
            JButton button = new JButton();
            button.setIcon(icon);
            button.setRolloverIcon(rollOverIcon);
            button.setRolloverEnabled(true);
            button.setBorderPainted(false);
            button.setFocusPainted(false);
            return button;
        }

    }
}

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