JEditorPane : Java Glossary

JEditorPane

JEditorPane is a component in Swing that can be used to render HTML or RTF (Rich Text Format). JEditorPane can use HTMLEditorKit as its plug-in EditorKit. HTMLEditorKit is not a GUI component in its own right. JEditorPane allows display of formatted HTML or RTF with colours and fonts whereas JTextPane is like JEditorPane but with the additional ability to edit styles and character attributes.

JEditorPane is simpler than the documentation suggests. You don’t need to get involved with Document structure. You can simply feed it raw HTML text. If you don’t embed the JEditorPane in a JScrollPane, the screen will twitch, a bug in Swing. You would think JEditorPane would be a subclass of JTextPane, but it is the reverse. In the constructor, pass it text/plain for ordinary text or text/html for HTML.

Gotchas

You won’t see any hyperlink events unless you do a setEditable( false );
JEditorPane.setBackground has no effect. You must set colours in HTML markup.

RobustJEditorPane

Any errors in the HTML rendered will trigger exceptions. RobustJEditorPane will trap the and ignore them so you don’t frighten the user.

Learning More

Sun’s Javadoc on JEditorPane class : available:

on the web at java.sun.com
in the current JDK 1.6.0_17 or in the old JDK 1.5.0_22 on your local Windows J: drive.

HTML rendering
JTextArea
JTextPane
no-wrap in JEditorPane: ouch!
Swing
ToolTip

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