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メインパネルのBorderLayout.SOUTH内にネストされたBorderLayoutを使用して、左下にゲームにJTextFieldを追加します。これはうまくいきますが、ボタンを追加してすぐ隣に行くと、JTextFieldが消えてしまいます。誰かが助けてくれますか？BorderLayout.SOUTHにボタンを追加した後にJavaスイングJTextFieldが消える
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class BlackjackGUI{
private JFrame frame;
private JPanel panel, panelLeft, panelBottom;
private JButton newGameBtn, dealBtn, hitBtn, standBtn;
private JLabel placeBetLbl, playerMoneyLbl;
private JLabel playerCard1Lbl, playerCard2Lbl, playerCard3Lbl,
playerCard4Lbl, playerCard5Lbl, playerCard6Lbl, playerCard7Lbl;
private JLabel dealerCard1Lbl, dealerCard2Lbl, dealerCard3Lbl, dealerCard4Lbl,
dealerCard5Lbl, dealerCard6Lbl, dealerCard7Lbl;
private JLabel playerCardValueLbl, dealerCardValueLbl;
private JLabel spacer1, spacer2;
private JTextField betInputBox;
public BlackjackGUI(){
createForm();
addTextField();
addButtons();
addLabels();
frame.add(panel);
frame.setVisible(true);
}
public void createForm() {
frame = new JFrame("Blackjack");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(1200,800);
panel = new JPanel();
panel.setLayout(new BorderLayout());
Color c = new Color(0, 100, 0);
panel.setBackground(c);
panelLeft = new JPanel();
Color panelLeftBG = new Color (23, 25, 100);
panelLeft.setBackground(panelLeftBG);
panel.add(panelLeft, BorderLayout.WEST);
panelBottom = new JPanel();
Color panelBottomBG = new Color (56, 12, 10);
panelBottom.setBackground(panelBottomBG);
panelBottom.setLayout(new BorderLayout());
panel.add(panelBottom, BorderLayout.SOUTH);
}
public void addButtons() {
newGameBtn = new JButton("New Game");
panelLeft.add(newGameBtn, BorderLayout.WEST);
newGameBtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
System.exit(0);
}
});
dealBtn = new JButton("Deal");
dealBtn.setPreferredSize(new Dimension (100, 50));
panelBottom.add(dealBtn, BorderLayout.WEST);
newGameBtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
System.exit(0);
}
});
}
public void addTextField() {
betInputBox = new JTextField("£25.00");
betInputBox.setFont(new Font("Gill Sans MT", Font.PLAIN, 35));
betInputBox.setHorizontalAlignment(SwingConstants.RIGHT);
betInputBox.setPreferredSize(new Dimension(175,50));
panelBottom.add(betInputBox, BorderLayout.WEST);
}
public void addLabels() {
placeBetLbl = new JLabel("Place your bets!");
placeBetLbl.setFont(new Font("Gill Sans MT", Font.PLAIN, 35));
panelBottom.add(placeBetLbl);
playerMoneyLbl = new JLabel("£2,500");
playerMoneyLbl.setFont(new Font("Gill Sans MT", Font.PLAIN, 35));
panelBottom.add(playerMoneyLbl, BorderLayout.EAST);
}
public static void main(String[] args) {
new BlackjackGUI();
}
}