java - JTable: display correctly refresh of a table -

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i trying display information on table , refresh table. doing follows:

//rowdata , columnname computed piece of code working  table = new jtable(rowdata, columnname); table.setautoresizemode(jtable.auto_resize_off); table.gettableheader().setreorderingallowed(false); getcontentpane().add(new jscrollpane(table), borderlayout.center); repaint();

however, following display (below). remove grey sqaure correspond table before update new content in red.

could please provide me advice remove ?

thank attention.

y enter image description here

don't add new table. instead update data in data model old table.

see this: https://docs.oracle.com/javase/tutorial/uiswing/components/table.html#data


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