Salut,
j'ai crée un formulaire qui contient 40 lignes (label +zone de texte ), mais le problème que le scrolling ne veux pas fonctionner , s'a affiche seulement 16 lignes ,voici le code:
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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package scroll;
 
import java.awt.BorderLayout;
import java.awt.Color;
 
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.border.LineBorder;
 
public class ex_scrol {
    private final JFrame       Form     = new JFrame( "Creation de formulaire" );
    private JPanel             panel    = new JPanel();
 
    private final JDesktopPane zone0    = new JDesktopPane();
    private final JDesktopPane zoneMere = new JDesktopPane();
    private JScrollPane        scroll;
    private JTextPane          head     = new JTextPane();
 
    public ex_scrol() {
        Form.setBackground( Color.GREEN );
        Form.setDefaultCloseOperation( Form.EXIT_ON_CLOSE );
        Form.setSize( 600, 600 );
        Form.setVisible( true );
        Form.getContentPane().setLayout( null );
        Form.setLocationRelativeTo( null );
        panel.setBounds( 0, 0, 600, 600 );
        panel.setBackground( null );
        panel.setBorder( null );
        Form.setContentPane( panel );
        zoneMere.setBounds( 0, 0, 600, 600 );
        zoneMere.setBackground( Color.GREEN );
        zoneMere.setBorder( null );
        zoneMere.setLayout( null );
 
        head.setContentType( "text/html" );
        head.setForeground( Color.WHITE );
        head.setBackground( Color.BLACK );
        head.setText( "\r\n<div style=\"text-align:center;color:white;font-size:17px;\">Creation de formulaire</div>" );
        head.setEditable( false );
 
        panel.setLayout( new BorderLayout() );
        panel.add( zoneMere, BorderLayout.CENTER );
        panel.add( head, BorderLayout.NORTH );
 
        /******************************************************************/
        zone0.setAutoscrolls( true );
        zone0.setBackground( null );
        // zone0.setBounds( 0, 0, 560, 1415 );
        zone0.setBorder( new LineBorder( Color.WHITE, 1 ) );
        JLabel l1 = new JLabel( "email1" );
        l1.setBounds( 10, 10, 150, 30 );
        zone0.add( l1 );
        JTextField t1 = new JTextField( "" );
        t1.setBounds( 162, 10, 200, 30 );
        zone0.add( t1 );
 
        JLabel l2 = new JLabel( "email2" );
        l2.setBounds( 10, 45, 150, 30 );
        zone0.add( l2 );
        JTextField t2 = new JTextField( "" );
        t2.setBounds( 162, 45, 200, 30 );
        zone0.add( t2 );
 
        JLabel l3 = new JLabel( "email3" );
        l3.setBounds( 10, 80, 150, 30 );
        zone0.add( l3 );
        JTextField t3 = new JTextField( "" );
        t3.setBounds( 162, 80, 200, 30 );
        zone0.add( t3 );
 
        JLabel l4 = new JLabel( "email4" );
        l4.setBounds( 10, 115, 150, 30 );
        zone0.add( l4 );
        JTextField t4 = new JTextField( "" );
        t4.setBounds( 162, 115, 200, 30 );
        zone0.add( t4 );
 
        JLabel l5 = new JLabel( "email5" );
        l5.setBounds( 10, 150, 150, 30 );
        zone0.add( l5 );
        JTextField t5 = new JTextField( "" );
        t5.setBounds( 162, 150, 200, 30 );
        zone0.add( t5 );
 
        JLabel l6 = new JLabel( "email6" );
        l6.setBounds( 10, 185, 150, 30 );
        zone0.add( l6 );
        JTextField t6 = new JTextField( "" );
        t6.setBounds( 162, 185, 200, 30 );
        zone0.add( t6 );
 
        JLabel l7 = new JLabel( "email7" );
        l7.setBounds( 10, 220, 150, 30 );
        zone0.add( l7 );
        JTextField t7 = new JTextField( "" );
        t7.setBounds( 162, 220, 200, 30 );
        zone0.add( t7 );
 
        JLabel l8 = new JLabel( "email8" );
        l8.setBounds( 10, 255, 150, 30 );
        zone0.add( l8 );
        JTextField t8 = new JTextField( "" );
        t8.setBounds( 162, 255, 200, 30 );
        zone0.add( t8 );
 
        JLabel l9 = new JLabel( "email9" );
        l9.setBounds( 10, 290, 150, 30 );
        zone0.add( l9 );
        JTextField t9 = new JTextField( "" );
        t9.setBounds( 162, 290, 200, 30 );
        zone0.add( t9 );
 
        JLabel l10 = new JLabel( "email10" );
        l10.setBounds( 10, 325, 150, 30 );
        zone0.add( l10 );
        JTextField t10 = new JTextField( "" );
        t10.setBounds( 162, 325, 200, 30 );
        zone0.add( t10 );
 
        JLabel l11 = new JLabel( "email11" );
        l11.setBounds( 10, 360, 150, 30 );
        zone0.add( l11 );
        JTextField t11 = new JTextField( "" );
        t11.setBounds( 162, 360, 200, 30 );
        zone0.add( t11 );
 
        JLabel l12 = new JLabel( "email12" );
        l12.setBounds( 10, 395, 150, 30 );
        zone0.add( l12 );
        JTextField t12 = new JTextField( "" );
        t12.setBounds( 162, 395, 200, 30 );
        zone0.add( t12 );
 
        JLabel l13 = new JLabel( "email13" );
        l13.setBounds( 10, 430, 150, 30 );
        zone0.add( l13 );
        JTextField t13 = new JTextField( "" );
        t13.setBounds( 162, 430, 200, 30 );
        zone0.add( t13 );
 
        JLabel l14 = new JLabel( "email14" );
        l14.setBounds( 10, 465, 150, 30 );
        zone0.add( l14 );
        JTextField t14 = new JTextField( "" );
        t14.setBounds( 162, 465, 200, 30 );
        zone0.add( t14 );
 
        JLabel l15 = new JLabel( "email15" );
        l15.setBounds( 10, 500, 150, 30 );
        zone0.add( l15 );
        JTextField t15 = new JTextField( "" );
        t15.setBounds( 162, 500, 200, 30 );
        zone0.add( t15 );
 
        JLabel l16 = new JLabel( "email16" );
        l16.setBounds( 10, 535, 150, 30 );
        zone0.add( l16 );
        JTextField t16 = new JTextField( "" );
        t16.setBounds( 162, 535, 200, 30 );
        zone0.add( t16 );
 
        JLabel l17 = new JLabel( "email17" );
        l17.setBounds( 10, 570, 150, 30 );
        zone0.add( l17 );
        JTextField t17 = new JTextField( "" );
        t17.setBounds( 162, 570, 200, 30 );
        zone0.add( t17 );
 
        JLabel l18 = new JLabel( "email18" );
        l18.setBounds( 10, 605, 150, 30 );
        zone0.add( l18 );
        JTextField t18 = new JTextField( "" );
        t18.setBounds( 162, 605, 200, 30 );
        zone0.add( t18 );
 
        JLabel l19 = new JLabel( "email19" );
        l19.setBounds( 10, 640, 150, 30 );
        zone0.add( l19 );
        JTextField t19 = new JTextField( "" );
        t19.setBounds( 162, 640, 200, 30 );
        zone0.add( t19 );
 
        JLabel l20 = new JLabel( "email20" );
        l20.setBounds( 10, 675, 150, 30 );
        zone0.add( l20 );
        JTextField t20 = new JTextField( "" );
        t20.setBounds( 162, 675, 200, 30 );
        zone0.add( t20 );
 
        JLabel l21 = new JLabel( "email21" );
        l21.setBounds( 10, 710, 150, 30 );
        zone0.add( l21 );
        JTextField t21 = new JTextField( "" );
        t21.setBounds( 162, 710, 200, 30 );
        zone0.add( t21 );
 
        JLabel l22 = new JLabel( "email22" );
        l22.setBounds( 10, 745, 150, 30 );
        zone0.add( l22 );
        JTextField t22 = new JTextField( "" );
        t22.setBounds( 162, 745, 200, 30 );
        zone0.add( t22 );
 
        JLabel l23 = new JLabel( "email23" );
        l23.setBounds( 10, 780, 150, 30 );
        zone0.add( l23 );
        JTextField t23 = new JTextField( "" );
        t23.setBounds( 162, 780, 200, 30 );
        zone0.add( t23 );
 
        JLabel l24 = new JLabel( "email24" );
        l24.setBounds( 10, 815, 150, 30 );
        zone0.add( l24 );
        JTextField t24 = new JTextField( "" );
        t24.setBounds( 162, 815, 200, 30 );
        zone0.add( t24 );
 
        JLabel l25 = new JLabel( "email25" );
        l25.setBounds( 10, 850, 150, 30 );
        zone0.add( l25 );
        JTextField t25 = new JTextField( "" );
        t25.setBounds( 162, 850, 200, 30 );
        zone0.add( t25 );
 
        JLabel l26 = new JLabel( "email26" );
        l26.setBounds( 10, 885, 150, 30 );
        zone0.add( l26 );
        JTextField t26 = new JTextField( "" );
        t26.setBounds( 162, 885, 200, 30 );
        zone0.add( t26 );
 
        JLabel l27 = new JLabel( "email27" );
        l27.setBounds( 10, 920, 150, 30 );
        zone0.add( l27 );
        JTextField t27 = new JTextField( "" );
        t27.setBounds( 162, 920, 200, 30 );
        zone0.add( t27 );
 
        JLabel l28 = new JLabel( "email28" );
        l28.setBounds( 10, 955, 150, 30 );
        zone0.add( l28 );
        JTextField t28 = new JTextField( "" );
        t28.setBounds( 162, 955, 200, 30 );
        zone0.add( t28 );
 
        JLabel l29 = new JLabel( "email29" );
        l29.setBounds( 10, 990, 150, 30 );
        zone0.add( l29 );
        JTextField t29 = new JTextField( "" );
        t29.setBounds( 162, 990, 200, 30 );
        zone0.add( t29 );
 
        JLabel l30 = new JLabel( "email30" );
        l30.setBounds( 10, 1025, 150, 30 );
        zone0.add( l30 );
        JTextField t30 = new JTextField( "" );
        t30.setBounds( 162, 1025, 200, 30 );
        zone0.add( t30 );
 
        JLabel l31 = new JLabel( "email31" );
        l31.setBounds( 10, 1060, 150, 30 );
        zone0.add( l31 );
        JTextField t31 = new JTextField( "" );
        t31.setBounds( 162, 1060, 200, 30 );
        zone0.add( t31 );
 
        JLabel l32 = new JLabel( "email32" );
        l32.setBounds( 10, 1095, 150, 30 );
        zone0.add( l32 );
        JTextField t32 = new JTextField( "" );
        t32.setBounds( 162, 1095, 200, 30 );
        zone0.add( t32 );
 
        JLabel l33 = new JLabel( "email33" );
        l33.setBounds( 10, 1130, 150, 30 );
        zone0.add( l33 );
        JTextField t33 = new JTextField( "" );
        t33.setBounds( 162, 1130, 200, 30 );
        zone0.add( t33 );
 
        JLabel l34 = new JLabel( "email34" );
        l34.setBounds( 10, 1165, 150, 30 );
        zone0.add( l34 );
        JTextField t34 = new JTextField( "" );
        t34.setBounds( 162, 1165, 200, 30 );
        zone0.add( t34 );
 
        JLabel l35 = new JLabel( "email35" );
        l35.setBounds( 10, 1200, 150, 30 );
        zone0.add( l35 );
        JTextField t35 = new JTextField( "" );
        t35.setBounds( 162, 1200, 200, 30 );
        zone0.add( t35 );
 
        JLabel l36 = new JLabel( "email36" );
        l36.setBounds( 10, 1235, 150, 30 );
        zone0.add( l36 );
        JTextField t36 = new JTextField( "" );
        t36.setBounds( 162, 1235, 200, 30 );
        zone0.add( t36 );
 
        JLabel l37 = new JLabel( "email37" );
        l37.setBounds( 10, 1270, 150, 30 );
        zone0.add( l37 );
        JTextField t37 = new JTextField( "" );
        t37.setBounds( 162, 1270, 200, 30 );
        zone0.add( t37 );
 
        JLabel l38 = new JLabel( "email38" );
        l38.setBounds( 10, 1305, 150, 30 );
        zone0.add( l38 );
        JTextField t38 = new JTextField( "" );
        t38.setBounds( 162, 1305, 200, 30 );
        zone0.add( t38 );
 
        JLabel l39 = new JLabel( "email39" );
        l39.setBounds( 10, 1340, 150, 30 );
        zone0.add( l39 );
        JTextField t39 = new JTextField( "" );
        t39.setBounds( 162, 1340, 200, 30 );
        zone0.add( t39 );
 
        JLabel l40 = new JLabel( "email40" );
        l40.setBounds( 10, 1375, 150, 30 );
        zone0.add( l40 );
        JTextField t40 = new JTextField( "" );
        t40.setBounds( 162, 1375, 200, 30 );
        zone0.add( t40 );
        scroll = new JScrollPane( zone0 );
        scroll.setAutoscrolls( true );
 
        scroll.setBounds( 10, 10, 560, 420 );
        scroll.setBorder( null );
        scroll.setBackground( Color.GREEN );
        scroll.setVerticalScrollBarPolicy( scroll.VERTICAL_SCROLLBAR_ALWAYS );
        zoneMere.add( scroll );
    }
    public static void main( String[] args ) throws SQLException {
        new ex_scrol();
    }
 
}