if (column < 0 || column >= table.getItemCount()) return;
int columnCount = table.getColumnCount(); if (columnCount == 0 && column != 0) return; if (columnCount > 0 && (column < 0 || column >= columnCount)) return;
void resize () {	if (table.isDisposed()) return;	if (item == null || item.isDisposed()) return;	if (column < 0 || column >= table.getItemCount()) return;	super.resize();}