How can a swing window frame be created?

To create a Swing window framework, you can follow these steps:

1. Import the relevant swing package.

import javax.swing.*;

1. Create a subclass that inherits from JFrame to serve as the main class for the window framework.

public class MainFrame extends JFrame {

}

1. Initialize settings in the constructor of the main class.

public MainFrame() {
    // 设置窗口标题
    setTitle("Swing窗口框架");

    // 设置窗口的大小
    setSize(400, 300);

    // 设置窗口关闭时的操作
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // 设置窗口可见
    setVisible(true);
}

1. Create an instance object in the main method of the main class.

public static void main(String[] args) {
    // 创建窗口框架实例
    MainFrame frame = new MainFrame();
}

1. After running the program, you will be able to see the created swing window framework.

The complete example code is as follows:

import javax.swing.*;

public class MainFrame extends JFrame {
    public MainFrame() {
        // 设置窗口标题
        setTitle("Swing窗口框架");

        // 设置窗口的大小
        setSize(400, 300);

        // 设置窗口关闭时的操作
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // 设置窗口可见
        setVisible(true);
    }

    public static void main(String[] args) {
        // 创建窗口框架实例
        MainFrame frame = new MainFrame();
    }
}