Как переключить панель gridpaglayout на jframe

Question

У меня есть jframe и 4 jpanel с gridbaglayout. Я хочу переключиться с jpanel на другой нажатием кнопки. Но вместо того, чтобы получить первую панель, я получаю последнюю. Вот что я сделал:

public static void main(String args[]){ 

     JFrame myframe = new JFrame(); 

     try { 
      contentPane = new BackgroundPanel(); 
      contentPane.setLayout(new GridBagLayout()); 
      contentPane.setBounds(0, 0, myframe.getWidth(), myframe.getHeight()); 
      //principalpane.setBackground(Color.cyan); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     try { 
      principalpane = new BackgroundPanel(); 
      principalpane.setLayout(new GridBagLayout()); 
      principalpane.setBounds(0, 0, myframe.getWidth(), myframe.getHeight()); 
      //principalpane.setBackground(Color.cyan); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     try { 
      optionspane = new BackgroundPanel(); 
      optionspane.setLayout(new GridBagLayout()); 
      optionspane.setBounds(0, 0, myframe.getWidth(), myframe.getHeight()); 
      //principalpane.setBackground(Color.cyan); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     try { 
      datapane = new BackgroundPanel(); 
      datapane.setLayout(new GridBagLayout()); 
      datapane.setBounds(0, 0, myframe.getWidth(), myframe.getHeight()); 
      //principalpane.setBackground(Color.cyan); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     try { 
      genpane = new BackgroundPanel(); 
      genpane.setLayout(new GridBagLayout()); 
      genpane.setBounds(0, 0, myframe.getWidth(), myframe.getHeight()); 
      //principalpane.setBackground(Color.cyan); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     /***************************************************************************/ 
     /*****************************First*****************************************/ 
     GridBagConstraints gbc=new GridBagConstraints(); 
     GridBagConstraints gbcl=new GridBagConstraints(); 
     JLabel welcome=new JLabel("Optimizing & Visualizing Process Progression"); 
     welcome.setFont(new Font("Tahoma", Font.BOLD, 14)); 
     gbcl.gridx=0; 
     gbcl.gridy=0; 
     gbcl.gridwidth = 2; 
     gbcl.gridheight=1; 
     gbcl.insets=new Insets(10,200,5,100); 
     gbcl.fill=GridBagConstraints.BOTH; 
     principalpane.add(welcome, gbcl); 


     gbc.gridx=0; 
     gbc.gridy=1; 
     gbc.weightx = 1; 
     gbc.weighty = 1; 
    // gbc.anchor=GridBagConstraints.NORTHWEST; 
     gbc.fill=GridBagConstraints.BOTH; 
     gbc.insets=new Insets(10,10,10,10); 
     try { 
      principalpane.add(Mypanel.secondpane(), gbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     gbc.gridx=1; 
     gbc.gridy=1; 

    // gbc.anchor=GridBagConstraints.NORTHEAST; 
     gbc.fill=GridBagConstraints.BOTH; 
     gbc.insets=new Insets(10,10,10,10); 
     try { 
      principalpane.add(Mypanel.firstpanel(), gbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     gbc.gridx=0; 
     gbc.gridy=2; 
     gbc.gridwidth = 2; 
     gbc.gridheight=2; 
    // gbc.anchor=GridBagConstraints.SOUTH; 
     gbc.fill=GridBagConstraints.BOTH; 
     gbc.insets=new Insets(0,10,5,10); 
     try { 
      principalpane.add(Mypanel.thirdpanel(), gbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     /******************Second ***************************/ 
     GridBagConstraints ogbc=new GridBagConstraints(); 
     GridBagConstraints ogbcl=new GridBagConstraints(); 

     JLabel optwelcome=new JLabel("Abnormal Process Progression"); 
     optwelcome.setFont(new Font("Ubuntu", Font.BOLD, 16)); 
     ogbcl.gridx=0; 
     ogbcl.gridy=0; 
     ogbcl.gridwidth = 2; 
     ogbcl.gridheight=1; 
     ogbcl.insets=new Insets(10,280,5,10); 
     ogbcl.fill=GridBagConstraints.BOTH; 
     optionspane.add(optwelcome, ogbcl); 

     gbc.gridx=0; 
     ogbc.gridy=1; 
     ogbc.weightx = 1; 
     ogbc.weighty = 1; 
    // gbc.anchor=GridBagConstraints.NORTHWEST; 
     ogbc.fill=GridBagConstraints.BOTH; 
     ogbc.insets=new Insets(10,10,10,10); 
     try { 
      optionspane.add(Mypanel.forthpanel(), ogbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     ogbc.gridx=1; 
     ogbc.gridy=1; 
     ogbc.weightx = 1; 
     ogbc.weighty = 1; 
     ogbcl.gridwidth = 1; 
     ogbc.gridheight=2; 
    // gbc.anchor=GridBagConstraints.NORTHWEST; 
     ogbc.fill=GridBagConstraints.BOTH; 
     ogbc.insets=new Insets(10,10,10,10); 
     try { 
      optionspane.add(Mypanel.sixthpanel(), ogbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     ogbc.gridx=0; 
     ogbc.gridy=2; 
     ogbc.weightx = 1; 
     ogbc.weighty = 1; 
     ogbc.gridheight=1; 
    // gbc.anchor=GridBagConstraints.NORTHWEST; 
     ogbc.fill=GridBagConstraints.BOTH; 
     ogbc.insets=new Insets(10,10,10,10); 
     try { 
      optionspane.add(Mypanel.fifthpanel(), ogbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     ogbc.gridx=0; 
     ogbc.gridy=3; 
     ogbc.weightx = 1; 
     ogbc.weighty = 1; 
     ogbc.gridwidth=2; 
    // gbc.anchor=GridBagConstraints.NORTHWEST; 
     ogbc.fill=GridBagConstraints.BOTH; 
     ogbc.insets=new Insets(10,10,10,10); 
     try { 
      optionspane.add(Mypanel.seventhpanel(), ogbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     /*************************Third*************************************/ 
     GridBagConstraints dgbc=new GridBagConstraints(); 
     GridBagConstraints dgbcl=new GridBagConstraints(); 

     JLabel datawelcome=new JLabel("Please Enter the QoS' values"); 
     datawelcome.setFont(new Font("Ubuntu", Font.BOLD, 16)); 
     dgbcl.gridx=0; 
     dgbcl.gridy=0; 
     dgbcl.gridwidth = 1; 
     dgbcl.gridheight=1; 
     dgbcl.anchor=GridBagConstraints.NORTH; 
     dgbcl.insets=new Insets(0,250,35,10); 
     dgbcl.fill=GridBagConstraints.BOTH; 
     datapane.add(datawelcome, dgbcl); 


     dgbc.gridx=0; 
     dgbc.gridy=0; 
     dgbc.weightx = 1; 
     dgbc.weighty = 1; 
     dgbcl.anchor=GridBagConstraints.CENTER; 
     dgbc.fill=GridBagConstraints.BOTH; 
     dgbc.insets=new Insets(5,10,10,5); 
     try { 
      datapane.add(Mypanel.eighthpanel(), dgbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     dgbc.gridx=0; 
     dgbc.gridy=1; 
     gbc.anchor=GridBagConstraints.SOUTH; 
     dgbc.fill=GridBagConstraints.BOTH; 
     dgbc.insets=new Insets(5,0,5,5); 
     try { 
      datapane.add(Mypanel.ninethpanel(), dgbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    /****************Fourth*************************************/ 
     GridBagConstraints ggbc=new GridBagConstraints(); 

     ggbc.gridx=0; 
     ggbc.gridy=0; 
     ggbc.weightx = 1; 
     ggbc.weighty = 1; 
     ggbc.anchor=GridBagConstraints.CENTER; 
     ggbc.fill=GridBagConstraints.BOTH; 
     ggbc.insets=new Insets(5,10,10,5); 
     try { 
      genpane.add(Mypanel.tenthpanel(), ggbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     ggbc.gridx=0; 
     ggbc.gridy=1; 
     ggbc.anchor=GridBagConstraints.SOUTH; 
     ggbc.fill=GridBagConstraints.BOTH; 
     ggbc.insets=new Insets(5,0,5,5); 
     try { 
      genpane.add(Mypanel.eleventhpanel(), ggbc); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     GridBagConstraints cgbc=new GridBagConstraints(); 

     cgbc.gridx=0; 
     cgbc.gridy=0; 
     cgbc.weightx = 1; 
     cgbc.weighty = 1; 
     cgbc.anchor=GridBagConstraints.CENTER; 
     cgbc.fill=GridBagConstraints.BOTH; 
     principalpane.setVisible(true); 
     contentPane.add(principalpane, cgbc); 

     cgbc.gridx=0; 
     cgbc.gridy=0; 
     cgbc.weightx = 1; 
     cgbc.weighty = 1; 
     cgbc.anchor=GridBagConstraints.CENTER; 
     cgbc.fill=GridBagConstraints.BOTH; 
     optionspane.setVisible(false); 
     contentPane.add(optionspane, cgbc); 

     cgbc.gridx=0; 
     cgbc.gridy=0; 
     cgbc.weightx = 1; 
     cgbc.weighty = 1; 
     cgbc.anchor=GridBagConstraints.CENTER; 
     cgbc.fill=GridBagConstraints.BOTH; 
     datapane.setVisible(false); 
     contentPane.add(datapane, cgbc); 

     cgbc.gridx=0; 
     cgbc.gridy=0; 
     cgbc.weightx = 1; 
     cgbc.weighty = 1; 
     cgbc.anchor=GridBagConstraints.CENTER; 
     cgbc.fill=GridBagConstraints.BOTH; 
     genpane.setVisible(false); 
     contentPane.add(genpane, cgbc); 

     contentPane.setVisible(true); 
     myframe.getContentPane().add(contentPane); 

     myframe.pack(); 
     myframe.setLocationRelativeTo(null); 
     myframe.setSize(new Dimension(800, 600)); 

     myframe.setVisible(true); 
     myframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

    } 

Answer 1

Слишком много кода, чтобы понять, что вы делаете, но GridBagLayout используется для статических макетов, где компоненты не динамически изменяться.

Я хочу переключиться с jpanel на другой с помощью щелчка по кнопке.

Звук для меня, как будто вы должны использовать Card Layout, который будет отображать только одну панель за раз и позволить вам менять панели.

В учебном примере показано, как сменить панели при создании ActionEvent.