Difference between JScrollPane.getViewportBorderBounds() and JScrollPane.getViewport()

Question

What is the difference between

JScrollPane.getViewportBorderBounds() 

and

JScrollPane.getViewport() 

and

JscrollPane.getVisibleRect()

First two are returning same dimension.

Answer 1

getViewportBorderBounds() returns Rectangle which represents the bounds of the viewport border

getViewport() returns current JViewport.

getVisibleRect() returns visible rectangle of the JScrollPane (including borders and scroll bars), which is inherited from JComponent.

I don't see any comparability among these three methods. They are telling you different things. Read for more details on http://docs.oracle.com/javase/7/docs/api/javax/swing/JScrollPane.html

Answer 2

With different LookAndFeel, getViewportBorderBounds() and getViewport() will give different values.