java - 我怎样才能像这样组织我的框架？

Question

我希望我的框架有 3 个看起来像这样的面板

我是 JPanel 的新手，我无法组织它，所以如果有人可以帮助我，我将不胜感激

Answer 1

首先查看 Laying Out Components Within a Container 。虽然您可以使用 GridBagLayout，但您也可以简单地使用 BorderLayouts

来使用一系列复合容器

例如...

JPanel left = new JPanel(new BorderLayout());
left.add(new TestPane(), BorderLayout.NORTH);
left.add(new TestPane());

JPanel main = new JPanel(new BorderLayout());
main.add(left);
main.add(new TestPane(), BorderLayout.EAST);

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.LineBorder;

public class Test {

    public static void main(String[] args) {
        new Test();
    }

    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JPanel left = new JPanel(new BorderLayout());
                left.add(new TestPane(), BorderLayout.NORTH);
                left.add(new TestPane());

                JPanel main = new JPanel(new BorderLayout());
                main.add(left);
                main.add(new TestPane(), BorderLayout.EAST);

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(main);
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        public TestPane() {
            setBorder(new LineBorder(Color.RED));
        }

        @Override
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }

    }

}