Text editor in Java with sample functions for desktop application

Question

I have a project, I'm creating an application in Java and I need text editor with sample functions (Bold, Italic, Size, Align, Undo, Redo) .

So is there a class in java for this purpose or a tutorial show how to develop it ?

I tried to style text in a jTextPane but when I change a word in Bold, the whole text become in Bold. I want just to stylize the selected text only.

Waiting for your response.

Thanks in advance.

Best Regards, Ali