else if (component == verticalScrollBar) verticalScrollBar = null; else if (component == horizontalScrollBar) horizontalScrollBar = null; else if (component == rowHeader) rowHeader = null; else if (component == columnHeader) columnHeader = null;
else if (component == vsb) vsb = null; else if (component == hsb) hsb = null; else if (component == rowHead) rowHead = null; else if (component == colHead) colHead = null;
  public void removeLayoutComponent(Component component) {    if (component == viewport)      viewport = null;    else if (component == verticalScrollBar)      verticalScrollBar = null;    else if (component == horizontalScrollBar)      horizontalScrollBar = null;    else if (component == rowHeader)      rowHeader = null;    else if (component == columnHeader)      columnHeader = null;    else if (component == lowerRight)      lowerRight = null;    else if (component == upperRight)      upperRight = null;    else if (component == lowerLeft)      lowerLeft = null;    else if (component == upperLeft)      upperLeft = null;  }