Java JTextPane

// Java Program to demonstrate a simple JTextPane
import javax.swing.*;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;

public class JTextPaneExample {
    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(() -> {
            // Create a JFrame
            JFrame frame = new JFrame("JTextPane Example");
            frame.setDefaultCloseOperation(
                JFrame.EXIT_ON_CLOSE);
            frame.setSize(400, 300);

            // Create a JTextPane
            JTextPane textPane = new JTextPane();

            // Step 2: Create styled text
            SimpleAttributeSet attributes
                = new SimpleAttributeSet();
            StyleConstants.setBold(attributes, true);
            StyleConstants.setItalic(attributes, true);
            textPane.setCharacterAttributes(attributes,
                                            false);

            // Step 3: Set the text
            textPane.setText(
                "This is a JTextPane example with styled text. !!Geeks Premier League 2023!!");

            // Step 4: Add JTextPane to the frame
            frame.add(new JScrollPane(textPane));

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

// Java Program to Implement setStyledDocument,
// getStyledDocument, insertComponent methods of the
// JTextPane
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;

public class JTextPaneExample {
    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(() -> {
            // Create a JFrame
            JFrame frame = new JFrame("JTextPane Example");
            frame.setDefaultCloseOperation(
                JFrame.EXIT_ON_CLOSE);
            frame.setSize(400, 300);

            // Create a JTextPane
            JTextPane textPane = new JTextPane();

            // Create a custom StyledDocument
            StyledDocument doc
                = textPane.getStyledDocument();

            // Create and set a Style for the text
            Style style = doc.addStyle("customStyle", null);
            StyleConstants.setForeground(style, Color.BLUE);
            StyleConstants.setBold(style, true);

            // Set the StyledDocument
            textPane.setStyledDocument(doc);

            // Insert text with custom style
            try {
                doc.insertString(0, "This is a ", style);
                doc.insertString(doc.getLength(),
                                 "button: ", null);
            }
            catch (BadLocationException e) {
                e.printStackTrace();
            }

            // Insert a button as a Swing component
            JButton button = new JButton("Click Me!");
            button.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e)
                {
                    JOptionPane.showMessageDialog(
                        frame, "Button clicked!");
                }
            });
            textPane.insertComponent(button);

            // Add JTextPane to the frame
            frame.add(new JScrollPane(textPane));

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