Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;

import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class Main extends JPanel implements MouseWheelListener {
    JTextArea textArea = new JTextArea();

    JScrollPane scrollPane = new JScrollPane(textArea);

    public Main() {
        super(new BorderLayout());
        textArea.setEditable(false);

        scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollPane.setPreferredSize(new Dimension(400, 250));
        add(scrollPane, BorderLayout.CENTER);

        textArea.addMouseWheelListener(this);

        setPreferredSize(new Dimension(450, 350));
        setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
    }

    public void mouseWheelMoved(MouseWheelEvent e) {
        double rotation = e.getPreciseWheelRotation();
        System.out.println(rotation);
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JComponent newContentPane = new Main();
        newContentPane.setOpaque(true);
        frame.setContentPane(newContentPane);

        frame.pack();
        frame.setVisible(true);
    }
}