JEditorPane.getPreferredSize() has the following syntax.
public Dimension getPreferredSize()
In the following code shows how to use JEditorPane.getPreferredSize() method.
/* w w w. j a v a 2s .c o m*/ import java.awt.Dimension; import java.io.IOException; import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.JScrollPane; public class Main { public static void main(final String args[]) { JFrame frame = new JFrame("EditorPane Example"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); try { JEditorPane editorPane = new JEditorPane("http://www.java2s.com"); editorPane.setEditable(false); Dimension dimension = editorPane.getPreferredSize(); JScrollPane scrollPane = new JScrollPane(editorPane); frame.add(scrollPane); } catch (IOException e) { System.err.println("Unable to load: " + e); } frame.setSize(640, 480); frame.setVisible(true); } }