public void setRightTopCorner(Organizer c) throws Exception {
public void setRightTopCorner(DisplayItem c) throws Exception {
    public void setRightTopCorner(Organizer c) throws Exception {        javax.swing.JScrollPane sp = (javax.swing.JScrollPane) getJavaObject();        if (sp != null) {            if (c != null) {                sp.setCorner(javax.swing.JScrollPane.UPPER_RIGHT_CORNER, (java.awt.Component) c.getJavaObject());            } else {                    throw new Exception("Could not set right top corner. The right top corner is null.");            }        } else {            throw new Exception("Could not set right top corner. The java scroll pane is null.");        }    }