JEditorPane split

Question

Hi all ,
I have a problem with JEditorPane, I would split it in pages .
I mean , i load a StyledDocument from a file and I would show only a page a time, I tried a copy and paste tecnique .
the whole file is in a JEditorPane and the single page is copied in another JEP that is showed.
this is the code :
     public void split(JTextPane from, JTextPane to,int fromWhere ,int toWhere,int jepFromWhere){
          from.select(fromWhere,fromWhere+toWhere);
          from.copy();
          to.setCaretPosition(jepFromWhere);
          to.paste();
     public void setDoc(DefaultStyledDocument document){
          this.doc = document;
          jep.setVisible(false);
          textPaneAppoggio.setDocument(document);
          stateChanged=false;
          stop = true;
          while( how < doc.getLength() && howmuch >0){
               split(textPaneAppoggio,jep,how,howmuch,jepHow);
               if (stateChanged){
                    stateChanged = false;
               }else{
               how = how+howmuch;
               jepHow = jepHow+howmuch;
          stop = false;
          jep.setVisible(true);
          return ;
public void adjustmentValueChanged(AdjustmentEvent e) {
     if(!stateChanged && stop){
          jep.setCaretPosition(jep.getDocument().getLength());
     if (e.getValue()!=0){
          howmuch = 0;
          jep.select( how , jep.getCaretPosition() - e.getValue());
             jep.cut();
                return ;
          jep.select( how , jep.getCaretPosition() - e.getValue());
          jep.cut();
          howmuch = howmuch /2;
          stateChanged = true;
     thanks for the replies !!!

Answer 1

the error is that sometimes the doc setting isn't stopped so the scrolling is done.
I tried the set AutoScroll feature but nothing different appened the JScrollPane scrolls anyway