Lightweight code editor widget for Java that supports JavaScript

Question

I'm creating a Swing application where the user should be able to edit JavaScript codes. So I need some kind of code editor embeddable in Java that supports:

• Customizable Auto-Completion (or if not already done, extensible enough to be easily implementable)
• Syntax Errors Highlight (like Netbeans or other advanced editors that can mark the lines with syntax problems)
• Color Syntax Highlighting (not very critical)

The need of it to be embeddable in Java is mainly because of the Auto-Completion which will be dynamic and very specific to the application.

Does such editor exists?

Answer 1

RSyntaxTextArea supports syntax highlighting and auto completion, but not error highlighting:

http://fifesoft.com/rsyntaxtextarea