setLayout(new GridLayout(3, 2));

add(new JButton("Button 1"));

add(new JButton("Button 2"));

add(new JButton("Button 3"));

add(new JButton("Button 4"));

add(new JButton("Button 5"));

add(new JButton("Button 6"));

}



public static void main(String[] args) {

SwingUtilities.invokeLater(() -> {

GridLayoutExample example = new GridLayoutExample();

example.setVisible(true);

});

}

}

```
5. BoxLayout：箱式布局，按照指定的方向（水平或垂直）排列组件。

```java

import javax.swing.*;

import java.awt.*;


public class BoxLayoutExample extends JFrame {

public BoxLayoutExample() {

setTitle("BoxLayout Example");

setSize(300, 200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));

add(new JButton("Button 1"));

add(new JButton("Button 2"));

add(new JButton("Button 3"));

}


public static void main(String[] args) {

SwingUtilities.invokeLater(() -> {

BoxLayoutExample example = new BoxLayoutExample();

example.setVisible(true);

});

}

}

```