How to set JtextArea to keep fixed no of rows?

Question

How can i keep no of rows constant in text area. I need to create a console window for my application. If rows exceeds predefined no of rows first rows must get disposed. As if first written row will be destroyed first when i append anything which exceeds no of rows set. One more thing , i need to keep vertical scroll bar. That means no of rows must not be the whatever rows are visible when text area it opened.

For example : - no of visible rows on view port are 30. It should keep 120 rows information, which will can be seen with the help of scroll bar.

Answer 1

Sounds like what you want to do is create your own Document implementation. See Document.

Answer 2

The Message Console shows one way.