setUnitIncrement(lineIncrement);
if (lineIncrement < 0) throw new IllegalArgumentException ("Unit increment less than zero.");  int range = maximum - minimum; if (lineIncrement > range) { if (range == 0) lineIncrement = 1; else lineIncrement = range; }  if (lineIncrement == this.lineIncrement) return;  this.lineIncrement = lineIncrement;  ScrollbarPeer sp = (ScrollbarPeer) getPeer (); if (sp != null) sp.setLineIncrement (this.lineIncrement);
setLineIncrement(int lineIncrement){  setUnitIncrement(lineIncrement);}