Изменить текст группе JButton исходя из выбора в JComboBox

package manadgerfile1;
 
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.*;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
 
import javax.swing.SwingUtilities;
 
public class ManagerBeta extends JFrame {
         
    public JButton jb0,jb1,jb2,jb3,jb4,jb5,jb6,jb7,jb8,jb9,jb10,jb11,jb12,jb13,jb14,jb15,jb16,jb17,jb18,jb19; 
    private JComboBox jcb;
    private JPanel jP1, jP2, jP3,jP4;
  
     String ViborPut="";
     static String user_selectable_directory="";
     static String user_selection_category="";
 
    ManagerBeta() {
 
      final JFrame myOkno = new JFrame("art manager");
       myOkno.getContentPane().setLayout(new BorderLayout());
       myOkno.setSize(600,600);
       myOkno.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      
      final JPanel jPanelTop = new JPanel();
        jPanelTop.setPreferredSize(new Dimension(600,100));
          jPanelTop.setBorder(BorderFactory.createLineBorder(Color.blue));
      JPanel jPanelCenter= new JPanel();
       jPanelCenter.setPreferredSize(new Dimension(380,380));
         jPanelCenter.setBorder(BorderFactory.createLineBorder(Color.darkGray));  
      final JPanel jPanelBoton= new JPanel();
        jPanelBoton.setPreferredSize(new Dimension(600,100));
            jPanelBoton.setBorder(BorderFactory.createLineBorder(Color.RED));
      final JPanel jPanelLeft = new JPanel();
          jPanelLeft.setBorder(BorderFactory.createLineBorder(Color.GREEN));
        jPanelLeft.setPreferredSize(new Dimension(100,500));
      final JPanel jPanelRight = new JPanel();
          jPanelRight.setBorder(BorderFactory.createLineBorder(Color.YELLOW)); 
        jPanelRight.setPreferredSize(new Dimension(100,500));
      
        myOkno.add(jPanelTop,BorderLayout.NORTH);
        myOkno.add(jPanelBoton, BorderLayout.SOUTH);
        myOkno.add(jPanelCenter,BorderLayout.CENTER);
        myOkno.add(jPanelLeft,BorderLayout.WEST);
        myOkno.add(jPanelRight,BorderLayout.EAST);
        
       final JButton jb0 = new JButton("0");final JButton jb1 = new JButton("1"); final JButton jb2 = new JButton("2"); final JButton jb3 = new JButton("3"); final JButton jb4 = new JButton("4");
        final JButton jb5 = new JButton("5");final JButton jb6 = new JButton("6");final JButton jb7 = new JButton("7");final JButton jb8 = new JButton("8");final JButton jb9 = new JButton("9");final JButton jb10 = new JButton("10");
        final JButton jb11 = new JButton("11"); final JButton jb12 = new JButton("12"); final JButton jb13 = new JButton("13"); final JButton jb14 = new JButton("14");
       final  JButton jb15 = new JButton("15");final JButton jb16 = new JButton("16");final JButton jb17 = new JButton("17");final JButton jb18 = new JButton("18");final JButton jb19 = new JButton("19");
jb0.setPreferredSize(new Dimension(60,60));jb1.setPreferredSize(new Dimension(60,60));jb2.setPreferredSize(new Dimension(60,60));jb3.setPreferredSize(new Dimension(60,60));jb4.setPreferredSize(new Dimension(60,60));jb5.setPreferredSize(new Dimension(60,60));
jb6.setPreferredSize(new Dimension(60,60));jb7.setPreferredSize(new Dimension(60,60));jb8.setPreferredSize(new Dimension(60,60));jb9.setPreferredSize(new Dimension(60,60));jb10.setPreferredSize(new Dimension(60,60));jb11.setPreferredSize(new Dimension(60,60));
jb12.setPreferredSize(new Dimension(60,60));jb13.setPreferredSize(new Dimension(60,60));jb14.setPreferredSize(new Dimension(60,60));jb15.setPreferredSize(new Dimension(60,60));jb16.setPreferredSize(new Dimension(60,60));jb17.setPreferredSize(new Dimension(60,60));
jb18.setPreferredSize(new Dimension(60,60));jb19.setPreferredSize(new Dimension(60,60));
 
jPanelLeft.add(jb0);jPanelLeft.add(jb1);jPanelLeft.add(jb2);jPanelLeft.add(jb3);jPanelLeft.add(jb4);
jPanelTop.add(jb5); jPanelTop.add(jb6); jPanelTop.add(jb7); jPanelTop.add(jb8); jPanelTop.add(jb9);jPanelRight.add(jb10);
jPanelRight.add(jb11);jPanelRight.add(jb12);jPanelRight.add(jb13);jPanelRight.add(jb14);jPanelBoton.add(jb15);jPanelBoton.add(jb16);jPanelBoton.add(jb17);
jPanelBoton.add(jb18);jPanelBoton.add(jb19);
//
//JRadioButton jRB1= new JRadioButton("ch1");JRadioButton jRB2= new JRadioButton("ch2");JRadioButton jRB3= new JRadioButton("ch3");JRadioButton jRB4= new JRadioButton("ch4");JRadioButton jRB5= new JRadioButton("ch5");
    // jPanelTop.add(jRB1); jPanelTop.add(jRB2); jPanelTop.add(jRB3); jPanelTop.add(jRB4); jPanelTop.add(jRB5);
final JComboBox jcb = new JComboBox();
 jcb.addItem("art");
 jcb.addItem("landscapes");
 jcb.addItem("illustrate");
 jcb.addItem("ornament");
 jcb.addItem("spaers");
 jcb.addItem("animal");
jPanelTop.add(jcb,BorderLayout.WEST);
 
jcb.addActionListener(new ActionListener(){
       
 public void actionPerformed(ActionEvent event){
 String item =(String) jcb.getSelectedItem();
System.out.println("выбрали "+item);
user_selectable_directory=item;
 
switch (item){
    case "art":
jb0.setText("art0");jb1.setText("art1");jb2.setText("art2");   jb3.setText("art3");jb4.setText("art4");jb5.setText("art5");jb6.setText("art6");   jb7.setText("art7");jb8.setText("art8");jb9.setText("art9");jb10.setText("art10");jb11.setText("art11");jb12.setText("art12");jb13.setText("art13");jb14.setText("art14");jb15.setText("art15");jb16.setText("16");jb17.setText("art17");jb18.setText("art18");jb19.setText("art19");
    case "landscapes":
jb0.setText("камни"); jb1.setText("вода");   jb2.setText("атмасферные");jb3.setText("небо");   jb4.setText("космос");     jb5.setText("деревья");   jb6.setText("поля");     jb7.setText("небо");jb8.setText("цветы");jb9.setText("космос");jb10.setText("л10");jb11.setText("л11");jb12.setText("л12");jb13.setText("л13");jb14.setText("л14");jb15.setText("л15");jb16.setText("л16");jb17.setText("л17");jb18.setText("л18");jb19.setText("л19");
    case "illustrate":
         jb0.setText("аниме"); jb1.setText("комиксы");jb2.setText("АртБук");     jb3.setText("Дисней"); jb4.setText("2D");         jb5.setText("3D");        jb6.setText("праздники");jb7.setText("scrap");jb8.setText("АгитПл");jb9.setText("винтаж");jb10.setText("дети");jb11.setText("Архитект");jb12.setText("Деревня");jb13.setText("Песонажи");jb14.setText("профессия");jb15.setText("животные");jb16.setText("оживленное");jb17.setText("сказки");jb18.setText("unpel");jb19.setText("ш19");
    case "ornament":
         jb0.setText("o0");jb1.setText("o1");jb2.setText("o2");jb3.setText("o3");jb4.setText("o4");jb5.setText("o5");jb6.setText("o6");jb7.setText("o7");jb8.setText("o8");jb9.setText("o9");jb10.setText("o10");jb11.setText("o11");jb12.setText("o12");jb13.setText("o13");jb14.setText("o14");jb15.setText("o15");jb16.setText("o16");jb17.setText("o17");jb18.setText("o18");jb19.setText("o19");
    case "spaers":    
         jb0.setText("волосы");jb1.setText("руки");jb2.setText("лицо");jb3.setText("сидячие");jb4.setText("лежа");jb5.setText("стоя");jb6.setText("ккк");jb7.setText("ккк");jb8.setText("кк");jb9.setText("ккк");jb10.setText("волосы");jb11.setText("руки");jb12.setText("лицо");jb13.setText("сидячие");jb14.setText("лежа");jb15.setText("стоя");jb16.setText("ккк");jb17.setText("ккк");jb18.setText("кк");jb19.setText("ккк");
    case "animal":    
         jb0.setText("копытные");jb1.setText("кошки");jb2.setText("рыбы");jb3.setText("птицы");jb4.setText("насекомые");jb5.setText("Африка");jb6.setText("рептилии");jb7.setText("грызуны");jb8.setText("медведи");jb9.setText("лисы");jb10.setText("волки");jb10.setText("куньи");jb11.setText("бобры-выдры");jb12.setText("ж12");jb13.setText("ж13");jb14.setText("ж14");jb15.setText("ж15");jb16.setText("ж16");jb17.setText("ж17");jb18.setText("ж18");jb19.setText("ж19");
  // jPanelTop.updateUI();jPanelLeft.updateUI();jPanelRight.updateUI();jPanelBoton.updateUI();                                      
}
myOkno.revalidate();
//jPanelTop.revalidate();
//jPanelLeft.revalidate();//updateUI();
//jPanelRight.revalidate();//updateUI();
//jPanelBoton.revalidate();//updateUI();/**/
 //jb1.setText("uuuu");
jb0.addMouseListener(new MouseHandler());
jb1.addMouseListener(new MouseHandler());
jb2.addMouseListener(new MouseHandler());
jb3.addMouseListener(new MouseHandler());
 }          
 });
 
myOkno.setVisible(true);
 
} 
    public static void main(String[] args) {
        //
        SwingUtilities.invokeLater(new Runnable(){
            public void run(){
                new ManagerBeta();
            }
        });
        //
    }
 
    private static class MouseHandler extends MouseAdapter {
//MouseMotionListener, MouseRelease
         public void mouseEntered(MouseEvent me)
          {
             // При перемещении мыши над кнопкой
             // 
               String navodka= me.getComponent().toString();//узнаем на какую кнопку навел пользователь
             //чистим сторку от хлама, чтобы узнать текст на кнопки
               int start=navodka.indexOf("text=")+5;
               int end=navodka.indexOf(",defaultCapable");
             user_selection_category=navodka.substring(start,end);//название кнопки лежит в user_selection_category
               System.out.println("Mouse is over "+navodka.substring(start,end));
             System.out.println("выбор "+ "C:Dowlods/"+user_selectable_directory+"/"+user_selection_category);
          }
       
      //  public void mouseEntered(MouseEvent me) {
      // System.out.println("Кнопка мыши entered");
   // }
         
        public void mouseRealesed(MouseEvent event){
 
                System.out.println("Кнопка мыши realesed");
        }
    }
    
}