I have to display a text line as a button. The text of line is more then limit of line so when i display it in button it scroll the text rather then display multi line button.
You can use MultiButton but you will have to do linebreaks yourself.
Alternatively you can use a TextArea which supports multi line and if you don't need the pressed state you can just set it to editable false and use setUIID("Button")
to make it look like a button. If you need something more elaborate you can use the lead component approach to build a button from a text area, to understand how that works look at the source code for multi button and read the documentation for setting the lead component in the Container class.
You can't do multi lines because button extands from label in lwuit. In this case you can use in ticker mode.