java - How JTextArea "tells" to JScrollPane to change view position while selecting text by dragging mouse outside visible view? -

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i have created scroll pane - working fine, noticed, if add jtextarea view panel, , if selecting text mouse dragging outside visible view - scroll pane not change it's view position make cursor/selected text visible. think jtextarea uses method notify scroll pane change view position in such case. how can notify custom scroll pane change position?


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