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Add a message to the component that is used to show messages.

I don't know if the jsplitpane or jscrollpane classes have any way to display messages.
Could you add a JLabel or JTextArea where you could display messages?

Where do you want it shown? Is there a component that is used to show messages to the user?
Like a JLabel or a text field.

Can you explain what "update on pPanel" means?