Swingin' Java: Doing it in style

Example 1.

import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.text.*;
import java.util.*;

public class Example1 extends JFrame{

  public Example1() {
        super("Swingin' Java -- Styled Text");
  }

  public static void main(String[] args) {
    Example1 frame = new Example1();



    //first we'll create a JEditorPane and populate it
    JEditorPane editor = new JEditorPane();
    //set the content type to HTML
    editor.setContentType("text/html");
    //set the editable to false to hide the head and title tags
    editor.setEditable(false);
    //let's create a simple html formatted document to put in the JEditorPane
    String editorText = "

	

	

	




    
    
";
    //we can do just about any styling that we want...
    editorText += "
This is centered text
";
    //yes, tables work too
    editorText += "
This is cell 0,0
This is cell 1,0
This is cell 2,0
This is cell 0,1
This is cell 1,1
This is cell 2,1
";
    //and any other tag that adheres to the HTML3.2 specification
    editorText += "
This is a heading (h2)
";
    //you get the idea, so we'll close it off
    editorText += "";
    //all we need to do now is set the text into our pane
    editor.setText(editorText);


    //now let's create a JTextPane, some AttributeSets, etc
    JTextPane textPane = new JTextPane();
    textPane.setEditable(false);
    //here's an example of some AttributeSets
    SimpleAttributeSet boldItalicRedText = new SimpleAttributeSet();
    StyleConstants.setForeground(boldItalicRedText, Color.red);
    StyleConstants.setBold(boldItalicRedText, true);
    StyleConstants.setItalic(boldItalicRedText, true);

    SimpleAttributeSet centeredBlackText = new SimpleAttributeSet();
    StyleConstants.setForeground(centeredBlackText, Color.black);
    StyleConstants.setAlignment(centeredBlackText, StyleConstants.ALIGN_CENTER);

    SimpleAttributeSet largeBlackText = new SimpleAttributeSet();
    StyleConstants.setForeground(largeBlackText, Color.black);
    StyleConstants.setFontSize(largeBlackText, 32);

    //now let's use them
    try {
        Document doc = textPane.getDocument();
        doc.insertString(doc.getLength(), "This is centered, black text...\n", centeredBlackText);
        textPane.setParagraphAttributes(centeredBlackText, true);
        doc.insertString(doc.getLength(), "This is bold, italic, red text...\n", boldItalicRedText);
        doc.insertString(doc.getLength(), "This is 32 point black text.\n", largeBlackText);
    }
    catch(BadLocationException exp) {
        exp.printStackTrace();
    }


    //all we need to do now is display our components
    JPanel panel = new JPanel();
    panel.setLayout(new GridLayout(2,1));
    panel.add(new JScrollPane(editor));
    panel.add(new JScrollPane(textPane));
    panel.setPreferredSize(new Dimension(400,400));


    //now we'll set the panel as our content pane
    frame.setContentPane(panel);

    //just to be nice, we'll shut down when the window is closed
    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
                System.exit(0);
        }
    });

    frame.pack();
    frame.show();
  }
}

Page 2 of 2



This article was originally published on April 26, 1999