import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import javax.swing.JFrame;
import javax.swing.JTextArea;
public class Main extends JFrame {
public Main() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(200, 200);
JTextArea textArea = new JTextArea();
textArea.addMouseWheelListener(new MouseWheelListener() {
public void mouseWheelMoved(MouseWheelEvent e) {
if (e.getWheelRotation() < 0) {
System.out.println("Up... " + e.getWheelRotation());
} else {
System.out.println("Down... " + e.getWheelRotation());
}
System.out.println("ScrollAmount: " + e.getScrollAmount());
if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
System.out.println("MouseWheelEvent.WHEEL_UNIT_SCROLL");
}
if (e.getScrollType() == MouseWheelEvent.WHEEL_BLOCK_SCROLL) {
System.out.println("MouseWheelEvent.WHEEL_BLOCK_SCROLL");
}
}
});
getContentPane().add(textArea);
}
public static void main(String[] args) {
new Main().setVisible(true);
}
}