如何添加jlabel圖像懸停？

Question

如何添加JLabel懸停？就像您將鼠標移動到頂部時一樣，新圖片將與其重疊。我知道如何使它與按鈕一起工作，但是相同的技術不適用於JLabel。有誰會引導我加入JLabel懸停？請和謝謝。

package src; 

import java.awt.Dimension; 
import javax.swing.ImageIcon; 
import javax.swing.JFrame; 
import javax.swing.JLabel; 

/* 
* @Author - 0x29A 
* 
* 
*/ 
public class Jframe { 

    public static void main(final String args[]) { 

     /* 
     * @Images 
     */ 
     final ImageIcon icon = new ImageIcon("Data/button.png"); 
     final JLabel label = new JLabel(icon); 

     final ImageIcon icon1 = new ImageIcon("Data/button1.png"); 
     final JLabel label1 = new JLabel(icon1); 

     final ImageIcon icon2 = new ImageIcon("Data/button2.png"); 
     final JLabel label2 = new JLabel(icon2); 

     final ImageIcon icon3 = new ImageIcon("Data/button3.png"); 
     final JLabel label3 = new JLabel(icon3); 

     final ImageIcon icon4 = new ImageIcon("Data/button4.png"); 
     final JLabel label4 = new JLabel(icon4); 

     final ImageIcon icon5 = new ImageIcon("Data/button5.png"); 
     final JLabel label5 = new JLabel(icon5); 

     final ImageIcon icon6 = new ImageIcon("Data/background.png"); 
     final JLabel label6 = new JLabel(icon6); 

     /* 
     * @Image Location 
     */ 
     label.setBounds(282, 255, 96, 96); 
     label1.setBounds(384, 255, 96, 96); 
     label2.setBounds(282, 153, 96, 96); 
     label3.setBounds(384, 153, 198, 96); 
     label4.setBounds(181, 152, 96, 96); 
     label5.setBounds(181, 255, 96, 96); 
     label6.setBounds(0, 0, 765, 503); 

     /* 
     * @Frame 
     */ 
     final JFrame frame = new JFrame("test"); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.setPreferredSize(new Dimension(765, 503)); 
     frame.setLayout(null); 
     frame.add(label); 
     frame.add(label1); 
     frame.add(label2); 
     frame.add(label3); 
     frame.add(label4); 
     frame.add(label5); 
     frame.add(label6); 
     frame.pack(); 
     frame.setResizable(false); 
     frame.setLocationRelativeTo(null); 
     frame.setVisible(true); 
    } 
} 

Answer 1

可以使用MouseEntered鼠標事件對於這一點，寫這樣的代碼 JLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("image location")));

Answer 2

做了一個簡單的例子，它採用了MouseListener和MosueAdapter來監視JLabelmouseExited()和mouseEntered()事件，並且在任這些方法被稱爲（即，當鼠標在標籤上或不在標籤上時）圖片被改變：

import java.awt.BorderLayout; 
import java.awt.Container; 
import java.awt.event.MouseAdapter; 
import javax.swing.*; 

public class LabelHoverTest extends JFrame { 

    Icon pic1; 
    Icon pic2; 
    JLabel label; 

    public LabelHoverTest(String title) { 
     super(title); 
     pic1 = UIManager.getIcon("OptionPane.informationIcon"); 
     pic2 = UIManager.getIcon("OptionPane.questionIcon"); 
     createAndShowUI(); 
    } 

    public static void main(String[] args) { 
     SwingUtilities.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       new LabelHoverTest("Label Hover Test").setVisible(true); 
      } 
     }); 
    } 

    private void createAndShowUI() { 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     setResizable(false); 
     addComponentsToPane(getContentPane()); 
     setSize(300, 300); 
     setLocationRelativeTo(null); 
     setVisible(true); 
    } 

    private void addComponentsToPane(Container contentPane) { 
     label = new JLabel(pic1); 

     contentPane.add(label, BorderLayout.CENTER); 

     label.addMouseListener(new MouseAdapter() { 

      @Override 
      public void mouseEntered(java.awt.event.MouseEvent evt) { 
       label.setIcon(pic2); 
      } 

      @Override 
      public void mouseExited(java.awt.event.MouseEvent evt) { 
       label.setIcon(pic1); 
      } 
     }); 
    } 
}