我想创建一个使用FlowLayout的JPanel。这个面板放置在一个使用BorderLayout的容器中。然后,将该容器添加到一个使用CardLayout的卡片中。我希望使用FlowLayout的面板成为BorderLayout面板左下角的一个小方框。我应该如何做?我已经使用了"settingsPanel.setPreferredSize(new Dimension(10, 425));",但无论我设置什么大小,宽度仍跨越整个面板,尽管高度发生了改变。我应该如何改变宽度?
代码:
代码:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
public class Main {
//Settings Panel variables
JLabel settingsTitle = new JLabel("Settings");
public Main()
{
JPanel mainCard = new JPanel(new BorderLayout(8,8));
JPanel settingsPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
settingsTitle.setFont(new Font("TimesRoman", Font.PLAIN, 35));
settingsPanel.add(settingsTitle);
final CardLayout layout = new CardLayout();
final JPanel cards = new JPanel(layout);
cards.add(mainCard, "2");
mainCard.add(settingsPanel, BorderLayout.SOUTH);
settingsPanel.setPreferredSize(new Dimension(10, 425));
settingsPanel.setBorder(BorderFactory.createLineBorder(Color.black));
layout.show(cards, "1");
JFrame window = new JFrame("Test");
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.getContentPane().add(cards);
window.setSize(1280, 720);
window.setLocationRelativeTo(null);
window.setResizable(false);
window.setVisible(true);
}
public static void main(String[] args)
{
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Main();
}
});
}
}
示例: