void updateScrollBars() { hasVScrollBar = false; hasHScrollBar = needsHScrollBar(); if (needsVScrollBar()) { hasVScrollBar = true; hasHScrollBar = needsHScrollBar(); } ScrollBar hScroll = getHorizontalBar(); if (hScroll != null) { hScroll.setVisible(hasHScrollBar); } ScrollBar vScroll = getVerticalBar(); if (vScroll != null) { vScroll.setVisible(hasVScrollBar); } }