Change the Font size of JTextPane : JTextPane « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JTextPane

import javax.swing.JTextPane;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;

public class Main {
  public static void main(String[] argv) throws Exception{
    JTextPane textPane = new JTextPane();
    StyledDocument doc = (StyledDocument) textPane.getDocument();

    // Create a style object and then set the style attributes
    Style style = doc.addStyle("StyleName", null);

    StyleConstants.setFontSize(style, 30);

    doc.insertString(doc.getLength(), "Some Text", style);
  }
}

14.38.JTextPane
	14.38.1.	Difference between JEditorPane and JTextPane
	14.38.2.	TabStop and TabSet Classes
	14.38.3.	Loading a JTextPane with Content: using StyleConstants to set Align, Font size, Space
	14.38.4.	StyleConstants Class
	14.38.5.	Change the Font size of JTextPane
	14.38.6.	SimpleAttribute: Bold, Italic
	14.38.7.	SimpleAttribute: Bold, Italic, Color
	14.38.8.	Font family
	14.38.9.	Adding Icon to JTextPane
	14.38.10.	Uses a listener label to display caret and selection status For JTextPane
	14.38.11.	Using Actions with Text Components: JTextPane
	14.38.12.	Editor based on JTextPane
	14.38.13.	Create a right-aligned tab stop at 200 pixels from the left margin
	14.38.14.	Create a center-aligned tab stop at 300 pixels from the left margin
	14.38.15.	Create a decimal-aligned tab stop at 400 pixels from the left margin
	14.38.16.	Create a tab set from the tab stops
	14.38.17.	Setting the Font and Color of Text in a JTextPane Using Styles: Makes text red
	14.38.18.	Setting the Font and Color of Text in a JTextPane Using Styles: Inherits from Red; makes text red and underlined
	14.38.19.	Setting the Font and Color of Text in a JTextPane Using Styles: Makes text 24pts
	14.38.20.	Setting the Font and Color of Text in a JTextPane Using Styles: Makes text italicized
	14.38.21.	Customizing Tab Stops in a JTextPane Component
	14.38.22.	Inserting an Image into a JTextPane Component
	14.38.23.	Inserting a Component into a JTextPane Component
	14.38.24.	Inserting Styled Text in a JTextPane Component
	14.38.25.	A style can have multiple attributes; this one makes text bold and italic
	14.38.26.	Duplicate style
	14.38.27.	Italicize the entire paragraph containing the position 12
	14.38.28.	Listing the Styles Associated with a JTextPane
	14.38.29.	Listing the Attributes in a Style
	14.38.30.	Replace style
	14.38.31.	Set logical style; replaces paragraph style's parent
	14.38.32.	Get logical style and restore it after new paragraph style
	14.38.33.	Determining If a Style Attribute Applies to a Character or the Paragraph
	14.38.34.	Determine if the attribute is a color or a font-related attribute.
	14.38.35.	Sharing Styles Between JTextPanes
	14.38.36.	Background color
	14.38.37.	Foreground color
	14.38.38.	Enumerating the Paragraphs of a JTextPane Component
	14.38.39.	Displaying Simple HTML Files
	14.38.40.	JTextPane Look and Feel
	14.38.41.	A separation of a data from the visual representation.