bonjour,

j'ai quelque difficulté a voir un certain nombre de composants JFrame : je voudrais modifier la taille de quelques JPanel

voici mon code :
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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public void IHMArticle ()
	{
		ListEntreprise = new JList(Ventreprise);
	ListCategorie =new JList(Vcategorie);
	ListSCategorie =new JList(Vscategorie);
 
 
		try{
			Class.forName("com.mysql.jdbc.Driver");
			System.out.println("JDBC Load categorie ok");
		}
		catch (ClassNotFoundException e1)
		{
			System.out.println(e1);
		}
 
		 try{
			 java.sql.Connection con = DriverManager.getConnection("jdbc:mysql://localhost/Ecommerce","root","");
			 System.out.println("bonne connexion 2");
 
 
			 String Sql="SELECT nomentreprise FROM Entreprise";
 
			 Statement st=con.createStatement();
			 ResultSet resul=st.executeQuery(Sql);
 
		     while(resul.next())
		     {
		       Ventreprise.addElement(new String(resul.getString("nomentreprise"))); 
 
		     }
 
		     ListEntreprise.setListData(Ventreprise);
 
		     String SQl="SELECT nomcategorie FROM Categorie ";
 
		    Vcategorie.clear();
		     resul=st.executeQuery(SQl);
		     while (resul.next())
		     {
		    	Vcategorie.addElement(new String(resul.getString("nomcategorie"))); 
		     }
 
		     ListCategorie.setListData(Vcategorie);
 
		     String SQLE="SELECT idcategorie FROM Categorie where nomcategorie='"+NomCategorie+"'";
 
		     resul =st.executeQuery(SQLE);
 
		     if(resul.next())
		     {
		    	 idcategorie=resul.getInt("idcategorie");
		     }
 
		     System.out.println(idcategorie);
 
		     String SQL ="SELECT nomsouscategorie FROM Souscategorie WHERE idcategorie="+idcategorie;
 
		      resul =st.executeQuery(SQL);
 
		      while (resul.next())
		      {
		    	  Vscategorie.addElement(new String(resul.getString("nomsouscategorie")));
		      }
		      ListSCategorie.setListData(Vscategorie);
 
 
		     resul.close();
		     st.close();
		     con.close();
		     System.out.println("Element inserer reussi !!");
		 }catch (SQLException x)
		 {
			 System.out.println(x);
		 }
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
		setSize (700,550);
		Container Co =this.getContentPane();
		Co.setLayout(new BorderLayout());
		JPanel panel_nord =new JPanel();
		JLabel titre =new JLabel("Fiche Article");
		panel_nord.add(titre);
		Co.add(BorderLayout.NORTH,panel_nord);
		JPanel panel_centre_article =new JPanel();
		panel_centre_article.setLayout(new GridLayout(12,4));
 
		JPanel panel_grid_article1 =new JPanel();
		JLabel entreprise =new JLabel("Entreprise");
		panel_grid_article1.add(entreprise);
		panel_centre_article.add(panel_grid_article1);
 
		JPanel panel_grid_article2 =new JPanel();
 
 
 
		Text_entreprise =new JTextField(10);
		panel_grid_article2.add(Text_entreprise);
		panel_centre_article.add(panel_grid_article2);
 
		JPanel panel_grid_article3 =new JPanel();
		ListEntreprise.addListSelectionListener(this);
		JScrollPane Scroll_entreprise =new JScrollPane(ListEntreprise);
		Scroll_entreprise.setPreferredSize(new Dimension (150,150));
		panel_grid_article3.add(Scroll_entreprise);
		panel_centre_article.add(panel_grid_article3);
 
		JPanel panel_grid_article4 =new JPanel();
	    JButton But_entreprise =new JButton("Creer Entreprise");
	    But_entreprise.addActionListener(this);
		 panel_grid_article4.add(But_entreprise);
			panel_centre_article.add(panel_grid_article4);
 
 
 
 
	    JPanel panel_grid_article5 =new JPanel();
		JLabel categorie =new JLabel("Categorie");
		panel_grid_article5.add(categorie);
		panel_centre_article.add(panel_grid_article5);
 
		JPanel panel_grid_article6 =new JPanel();
		 Text_categorie =new JTextField(10);
		 panel_grid_article6.add(Text_categorie );
		 panel_centre_article.add(panel_grid_article6);
 
		 JPanel panel_grid_article7 =new JPanel();
		 ListCategorie.addListSelectionListener(this);
		JScrollPane Scroll_categorie =new JScrollPane(ListCategorie);
		Scroll_categorie.setPreferredSize(new Dimension(150,150));
		panel_grid_article7.add(Scroll_categorie);
		panel_centre_article.add(panel_grid_article7);
 
		JPanel panel_grid_article8 =new JPanel();
	    JButton But_categorie =new JButton("Creer Categorie");
	  panel_grid_article8.add(But_categorie);
		panel_centre_article.add(panel_grid_article8);
 
 
 
 
	    JPanel panel_grid_article9 =new JPanel();
		JLabel sous_categorie =new JLabel("Sous Categorie");
		panel_grid_article9.add(sous_categorie);
		panel_centre_article.add(panel_grid_article9);
 
		JPanel panel_grid_article10 =new JPanel();
		 Text_sous_categorie =new JTextField(10);
		 panel_grid_article10 .add(Text_sous_categorie);
			panel_centre_article.add(panel_grid_article10);
 
		JPanel panel_grid_article11 =new JPanel();
 
		ListSCategorie.addListSelectionListener(this);
		JScrollPane Scroll_sous_categorie =new JScrollPane(ListSCategorie);
		Scroll_sous_categorie.setPreferredSize(new Dimension (150,150));
		panel_grid_article11.add(Scroll_sous_categorie);
		panel_centre_article.add(panel_grid_article11);
 
		JPanel panel_grid_article12 =new JPanel();	
	    JButton But_sous_categorie =new JButton("Creer Sous Categorie");
	    panel_grid_article12.add(But_sous_categorie);
	    panel_centre_article.add(panel_grid_article12);
 
 
 
	    JPanel panel_grid_article13 =new JPanel();
	    JLabel nomarticle =new JLabel("Nom De l'Article");
	    panel_grid_article13.add(nomarticle);
	    panel_centre_article.add(panel_grid_article13);
 
 
	    JPanel panel_grid_article14 =new JPanel();
	  Text_nom_article =new JTextField(10);
	    panel_grid_article14.add(Text_nom_article);
 
	    panel_centre_article.add(panel_grid_article14);
 
	    JPanel panel_grid_article15 =new JPanel();
	    ListArticle.setPreferredSize(new Dimension (150,150));
	    JScrollPane Pane_Article =new JScrollPane(ListArticle);
	    panel_grid_article15.add(Pane_Article);
	    panel_centre_article.add(panel_grid_article15);
 
	    JPanel panel_grid_article16 =new JPanel();
	    panel_centre_article.add(panel_grid_article16);
 
	    JPanel panel_grid_article17 =new JPanel();
	    JLabel description1 =new JLabel("Description");
	    panel_grid_article17.add(description1);
 
	    panel_centre_article.add(panel_grid_article17);
 
 
	    JPanel panel_grid_article18 =new JPanel();
	    panel_centre_article.add(panel_grid_article18);
 
	    JPanel panel_grid_article19 =new JPanel();
	    panel_centre_article.add(panel_grid_article19);
 
	    JPanel panel_grid_article20 =new JPanel();
	    panel_centre_article.add(panel_grid_article20);
 
	    JPanel panel_grid_article21 =new JPanel();
	   Text_description1 =new JTextField(30);
	    panel_grid_article21.add(Text_description1);
 
	    panel_centre_article.add(panel_grid_article21);
 
	    JPanel panel_grid_article22 =new JPanel();
	    panel_centre_article.add(panel_grid_article22);
 
	    JPanel panel_grid_article23 =new JPanel();      
	    panel_centre_article.add(panel_grid_article23);
 
 
	    JPanel panel_grid_article24 =new JPanel();
	    panel_centre_article.add(panel_grid_article24);
 
 
	    JPanel panel_grid_article25 =new JPanel();
	    JLabel description2 =new JLabel("Description");
	    panel_grid_article25.add(description2);
	    panel_centre_article.add(panel_grid_article25);
 
 
	    JPanel panel_grid_article26 =new JPanel();
	    panel_centre_article.add(panel_grid_article26);
 
 
	    JPanel panel_grid_article27 =new JPanel();    
	    panel_centre_article.add(panel_grid_article27);
 
	    JPanel panel_grid_article28 =new JPanel();
	    panel_centre_article.add(panel_grid_article28);
 
 
	    JPanel panel_grid_article29 =new JPanel();
	    Text_description2 =new JTextField(30);
	    panel_grid_article29.add(Text_description2);
	    panel_centre_article.add(panel_grid_article29);
 
 
	    JPanel panel_grid_article30 =new JPanel();
	    panel_centre_article.add(panel_grid_article30);
 
 
 
	    JPanel panel_grid_article31 =new JPanel();    
	    panel_centre_article.add(panel_grid_article31);
 
 
	    JPanel panel_grid_article32 =new JPanel();
	    panel_centre_article.add(panel_grid_article32);
 
	    JPanel panel_grid_article33 =new JPanel();
	    JLabel description3=new JLabel("Description");
	    panel_grid_article33.add(description3 );
	    panel_centre_article.add(panel_grid_article33);
 
	    JPanel panel_grid_article34 =new JPanel();
	    panel_centre_article.add(panel_grid_article34);
 
	    JPanel panel_grid_article35 =new JPanel();    
	    panel_centre_article.add(panel_grid_article35);
 
	    JPanel panel_grid_article36 =new JPanel();
	    panel_centre_article.add(panel_grid_article36);
 
	    JPanel panel_grid_article37 =new JPanel();
	     Text_description3 =new JTextField(30);
	    panel_grid_article37.add(Text_description3);
	    panel_centre_article.add(panel_grid_article37);
 
 
	    JPanel panel_grid_article38 =new JPanel();
	    panel_centre_article.add(panel_grid_article38);
 
	    JPanel panel_grid_article39 =new JPanel(); 
	    panel_centre_article.add(panel_grid_article39);
 
 
	    JPanel panel_grid_article40 =new JPanel(); 
	    panel_centre_article.add(panel_grid_article40);
 
	    JPanel panel_grid_article41 =new JPanel();
	    JLabel prixtotal =new JLabel("Prix Article");
	    panel_grid_article41.add(prixtotal);
 
	    panel_centre_article.add(panel_grid_article41);
 
	    JPanel panel_grid_article42 =new JPanel();
	    Text_prix =new JTextField(15);
	    panel_grid_article42.add(Text_prix);
	    panel_centre_article.add(panel_grid_article42);
 
 
	    JPanel panel_grid_article43 =new JPanel();
	    JLabel image =new JLabel("Nom De L'image");
	    panel_grid_article43.add(image);
	    panel_centre_article.add(panel_grid_article43);
 
	    JPanel panel_grid_article44 =new JPanel();
	    Text_image =new JTextField(15);
	    panel_grid_article44.add(Text_image);
	    panel_centre_article.add(panel_grid_article44);
 
 
	    Co.add(BorderLayout.CENTER,panel_centre_article);
 
	    JPanel panel_sud_article =new JPanel();
	    panel_sud_article.setLayout(new FlowLayout());
	    JPanel flow_sud =new JPanel();
 
	   Butvalider =new JButton("Valider");
	    Butvalider.addActionListener(this);
	    flow_sud.add(Butvalider);
 
	    Butmodifier =new JButton("Modifier");
	    Butmodifier.addActionListener(this);
	    flow_sud.add(Butmodifier);
 
 
	    JButton Butannuler =new JButton("Annuler");
	    flow_sud.add(Butannuler);
 
 
	    JButton Butterminer =new JButton("Terminer");
	    flow_sud.add(Butterminer);
 
	    panel_sud_article.add(flow_sud);
 
	    Co.add(BorderLayout.SOUTH,panel_sud_article);
 
 
	}
merci !