Too big panel on a scrollpane

Question

hello!
i create a panel with several small panels on it, so it is too big to display in my window. therefore i want to have it a scrollpane. this way:
JPanel jp = new JPanel();
        jp.setLayout(new BoxLayout(jp,BoxLayout.Y_AXIS));
        for(int p=1;p<12;p++){
         posten rlist1 = new posten(p); // "posten" is a small panel
         jp.add(rlist1);
        JScrollPane sp =new JScrollPane();
        sp.setViewportView(jp);
        jPanel10.add(sp);jpanel10 has the scrolls on it, to scroll jp.. but the panel jp which is too big, laps over at top and bottom.
hard to explain perhaps, here is a picture:
http://www.cds-server.de/pub/jpanel.jpg
what can i do to make it hide the too big parts?

Answer 1

ok, it took me the hole day to find out that to reproduce this behavior it is necessary
to have the underlaying panel with "free design",
the next panel is with boxlayout . and there is the mess.
therefore the code is not very short, more long, sorry for that,
but it is the shortest way to show my problem:
import javax.swing.BoxLayout;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
public class qqqq extends javax.swing.JFrame {
    public qqqq() {
        initComponents();
        JPanel jp = new JPanel();
        jp.setLayout(new BoxLayout(jp,BoxLayout.Y_AXIS));
        for(int p=1;p<12;p++){
         posten rlist1 = new posten(p);
         jp.add(rlist1);
        jp.validate();
        JScrollPane sp =new JScrollPane(jp);
        jPanel2.add(sp);
    private void initComponents() {                         
        jPanel1 = new javax.swing.JPanel();
        jPanel2 = new javax.swing.JPanel();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jPanel2.setLayout(new javax.swing.BoxLayout(jPanel2, javax.swing.BoxLayout.LINE_AXIS));
        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, 466, Short.MAX_VALUE)
                .addContainerGap())
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, 74, Short.MAX_VALUE)
                .addContainerGap())
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(68, 68, 68)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(75, Short.MAX_VALUE))
        pack();
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new qqqq().setVisible(true);
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
//******inner class with panel****//////////
class posten extends java.awt.Panel {
    public posten(Integer p) {
        initComponents();
        jLabel1.setText(p.toString());
    private void initComponents() {                         
        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jTextField2 = new javax.swing.JTextField();
        setLayout(new java.awt.BorderLayout());
        jPanel1.setLayout(new javax.swing.BoxLayout(jPanel1, javax.swing.BoxLayout.LINE_AXIS));
        jPanel1.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        jPanel1.setMaximumSize(new java.awt.Dimension(32767, 8));
        jLabel1.setText("Posten");
        jPanel1.add(jLabel1);
        jPanel1.add(jTextField1);
        jPanel1.add(jTextField2);
        add(jPanel1, java.awt.BorderLayout.CENTER);
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;  
}