Java如何处理Swing中的鼠标事件？
package org.nhooo.example.swing;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class MouseListenerDemo extends JFrame {
public MouseListenerDemo() {
initComponents();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> new MouseListenerDemo().setVisible(true));
}
private void initComponents() {
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setSize(400, 400);
JTextArea textArea = new JTextArea();
textArea.setText("Press the mouse button...");
MouseAdapter mouseAdapter = new MyMouseAdapter();
textArea.addMouseListener(mouseAdapter);
getContentPane().add(textArea);
}
private static class MyMouseAdapter extends MouseAdapter {
public void mouseClicked(MouseEvent e) {
System.out.println("MouseListenerDemo.mouseClicked");
}
public void mousePressed(MouseEvent e) {
System.out.println("MouseListenerDemo.mousePressed");
}
public void mouseReleased(MouseEvent e) {
System.out.println("MouseListenerDemo.mouseReleased");
}
public void mouseEntered(MouseEvent e) {
System.out.println("MouseListenerDemo.mouseEntered");
}
public void mouseExited(MouseEvent e) {
System.out.println("MouseListenerDemo.mouseExited");
}
}
}
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