用于Java Swing的十六进制查看器/编辑器GUI组件？

import javax.swing.*;
import javax.swing.text.JTextComponent;

public class HexEditor {
  public static void main(String[] args) {
    JFrame frame = new JFrame("Hex Editor");
    frame.setSize(400, 300);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
    JScrollPane scrollPane = new JScrollPane();
    frame.add(scrollPane);
    JTextComponent hexEditor = new JHexEditor(scrollPane);
    scrollPane.setViewportView(hexEditor);
  }
}

class JHexEditor extends JTextComponent {
  private JScrollPane scrollPane;

  public JHexEditor(JScrollPane scrollPane) {
    this.scrollPane = scrollPane;
    setEditable(false);
    setFocusable(false);
    setOpaque(false);
    scrollPane.setViewportView(this);
  }

  public String getHexText() {
    return getValue();
  }

  public void setHexText(String hexText) {
    setValue(hexText);
  }
}