边框布局不起作用

我一直在尝试设置此边框布局几个小时。我在Java网站上查找了如何使用BorderLayout，但是我仍然没有得到它。

我在下面包含了我的代码以供查看，并使其更易于查看我如何尝试使用BorderLayout函数。

如何在JL3上设置边框布局？

class GameStructure {
    private String []wordList = {"computer","java","activity","alaska","appearance","article",
            "automobile","basket","birthday","canada","central","character","chicken","chosen",
            "cutting","daily","darkness","diagram","disappear","driving","effort","establish","exact",
            "establishment","fifteen","football","foreign","frequently","frighten","function","gradually",
            "hurried","identity","importance","impossible","invented","italian","journey","lincoln",
            "london","massage","minerals","outer","paint","particles","personal","physical","progress",
            "quarter","recognise","replace","rhythm","situation","slightly","steady","stepped",
            "strike","successful","sudden","terrible","traffic","unusual","volume","yesterday"};
   private JTextField tf;
   private JLabel jl2;

   public void window() {
      ImageIcon ic = new ImageIcon("hangman.png");
      JFrame gameFrame = new JFrame();
      JPanel jp = new JPanel();
      JPanel jpLets = new JPanel();
      JPanel jpBlank = new JPanel();
      JPanel imgPane = new JPanel();
      JPanel panel1 = new JPanel();
      JPanel panel2 = new JPanel();
      panel2.setLayout(new BorderLayout());
      jpLets.setLayout(new BoxLayout(jpLets, BoxLayout.Y_AXIS));
      panel1.setLayout(new BorderLayout());
      panel1.setOpaque(false);//!!
      //jp.setBorder(BorderFactory.createTitledBorder(""));
      tf = new JTextField(1);
      JLabel img = new JLabel(ic, JLabel.CENTER);
      JLabel jl = new JLabel("Enter a letter", JLabel.CENTER);
      jl2 = new JLabel("Letters used:  ", JLabel.CENTER);
      JLabel jl3 = new JLabel("__ ", JLabel.CENTER);
      jl.setFont(new Font("Rockwell", Font.PLAIN, 20));
      tf.setFont(new Font("Rockwell", Font.PLAIN, 20));
      jl2.setFont(new Font("Rockwell", Font.PLAIN, 20));
      imgPane.add(img, BorderLayout.CENTER);
      jp.add(jl);
      jp.add(tf);
      jpLets.add(jl2);
      jpBlank.add(jl3);
      //jpMain.add(imgPane, BorderLayout.CENTER);
      panel1.add(jp, BorderLayout.NORTH);
      panel1.add(jpLets, BorderLayout.SOUTH);
      panel1.add(imgPane);
      panel2.add(panel1, BorderLayout.CENTER);
      panel2.add(jpBlank, BorderLayout.PAGE_END);
      gameFrame.setTitle("Hangman");
      gameFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      gameFrame.setIconImage(
      new ImageIcon("Hangman-Game-grey.png").getImage());
      gameFrame.setResizable(false);
      gameFrame.add(panel2);
      gameFrame.setSize(600, 600);
      gameFrame.setLocationRelativeTo(null);
      gameFrame.setVisible(true);

          int j = 0;
          int []length = new int[64];
          for(j = 0; j<64; j++) {
             length[j] = wordList[j].length();//gets length of words in wordList
          }//end for
          int l = 0;
          String line = "";
          //create line first then put into .setText
          for(int m = 0; m<length[l]; m++) {
              line += "__ ";
              l++;
          }//end for
          jl3.setText(line);

          tf.addActionListener(new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {//when enter key pressed
              JTextField tf = (JTextField)e.getSource();
              String letter = tf.getText();
              jl2.setText(jl2.getText() + letter + " ");//sets jlabel text to users entered letter
              }//end actionPerformed method
          });
      }//end userInput method
   }

public class GameMain {
   public static void main(String[] args) {
      GameStructure game = new GameStructure();
      game.window();
   }
}