package yaokun.yuki.guangshi;import javax.swing.*;import java.awt.*;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2003</p> * <p>Company: </p> * @author not attributable * @version 1.0 */public class ButtonScrollPane extends JScrollPane {  JPanel mainP = new JPanel();  GridLayout gridLayout = new GridLayout();  public ButtonScrollPane() {    try {      jbInit();    }    catch(Exception e) {      e.printStackTrace();    }  }  private void jbInit() throws Exception {    this.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);    mainP.setLayout(gridLayout);    this.getViewport().add(mainP, null);  }}