java programming is distributed, micro service? What else can I write without Spring
I don't know when I like to write interface programs and app s in java. Maybe that's all the fun programmers have left. But for me. I enjoy the process. Programming ape, love programming. Leisure time, a cup of coffee, a piece of light music, open the notebook with a line of code to achieve their own ideas, is really a pleasure.
Effect

Code

package example;
 
/**
* ┏┓　　　┏┓
*┏┛┻━━━ ┻┓
*┃　　　　　　　┃ 　
*┃　　　━　　　┃
*┃　┳┛　┗┳　┃
*┃　　　　　　　┃
*┃　　　┻　　　┃
*┃　　　　　　　┃
*┗━┓　　　┏━┛
*　　┃　　　┃Gods and beasts bless you
*　　┃　　　┃No BUG in code!
*　　┃　　　┗━━━┓
*　　┃　　　　　　　┣┓
*　　┃　　　　　　　┏┛
*　　┗┓┓┏━┳┓┏┛
*　　　┃┫┫　┃┫┫
*　　　┗┻┛　┗┻┛             
*
*!!!!!!!!!!!!!!!!!!Get busy living or get busy dying!!!!!!!!!!!!!       
*/
 
/**
 * Notepad startup class
 *
 * @author www.javayihao.top
 * @Time 2019
 */
public class App {
    public static void main(String[] args) {
        // Launch custom window object
        EditorFrame editor = new EditorFrame();
    }
}
 
package example;
 
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
 
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.JToolBar;
import javax.swing.text.DefaultStyledDocument;
 
/**
 * java Implement the main program of Notepad program
 *
 * @author Administrator
 *
 */
/*
 * Custom window class EditorFrame inherits JFrame to implement action listener interface ActionListener
 */
public class EditorFrame extends JFrame implements ActionListener {
 
    // Define related properties
    private JMenuBar menuBar;// Top menu bar
    private JMenu menuFile, menuEdit, menuAbout;// Menu files, editing, about
    // Menu item new, open, save, exit, cut, copy, paste, about
    private JMenuItem itemNewFile, itemOpen, itemSave, itemExit, itemCut, itemCopy, itemPaste, itemAbout;
    private JToolBar toolBar;// Toolbar
    // Buttons new, open, save, exit, cut, copy, paste, about
    private JButton butNewFile, butOpen, butSave, butExit, butCut, butCopy, butPaste, butAbout;
    private JTextPane textPane;// Edit window
    private JLabel label;// Bottom tab bar
    private JFileChooser fileChooser;// File selector
    private JScrollPane scrollPane;
    /*
     * Construction method
     */
 
    public EditorFrame() {
        // Instantiate menu bar
        menuBar = new JMenuBar();
        // Instantiate menu
        menuFile = new JMenu("file");
        menuEdit = new JMenu("edit");
        menuAbout = new JMenu("about");
        // Instantiate menu items and add event listening
        itemNewFile = new JMenuItem("Newly build");
        itemNewFile.addActionListener(this);// Set up monitoring
        itemNewFile.setActionCommand("newFile");
        itemOpen = new JMenuItem("open");
        itemOpen.addActionListener(this);// Set up monitoring
        itemOpen.setActionCommand("open");
        itemSave = new JMenuItem("Preservation");
        itemSave.addActionListener(this);// Set up monitoring
        itemSave.setActionCommand("save");
        itemExit = new JMenuItem("Sign out");
        itemExit.addActionListener(this);// Set up monitoring
        itemExit.setActionCommand("exit");
        itemCut = new JMenuItem("shear");
        itemCut.addActionListener(this);// Set up monitoring
        itemCut.setActionCommand("cut");
        itemCopy = new JMenuItem("copy");
        itemCopy.addActionListener(this);// Set up monitoring
        itemCopy.setActionCommand("copy");
        itemPaste = new JMenuItem("paste");
        itemPaste.addActionListener(this);// Set up monitoring
        itemPaste.setActionCommand("paste");
        itemAbout = new JMenuItem("about");
        itemAbout.addActionListener(this);// Set up monitoring
        itemAbout.setActionCommand("about");
        // File settings menu item
        menuFile.add(itemNewFile);
        menuFile.add(itemOpen);
        menuFile.add(itemExit);
        menuFile.add(itemSave);
        // Edit settings menu item
        menuEdit.add(itemCut);
        menuEdit.add(itemCopy);
        menuEdit.add(itemPaste);
        // About settings menu
        menuAbout.add(itemAbout);
        // Menu bar settings menu
        menuBar.add(menuFile);
        menuBar.add(menuEdit);
        menuBar.add(menuAbout);
        this.setJMenuBar(menuBar);
        // Instantiate toolbar
        toolBar = new JToolBar();
        // Instantiate button
        butNewFile = new JButton("Newly build");
        butNewFile.addActionListener(this);
        butNewFile.setActionCommand("newFile");
        butOpen = new JButton("open");
        butOpen.addActionListener(this);// Set up monitoring
        butOpen.setActionCommand("open");
        butSave = new JButton("Preservation");
        butSave.addActionListener(this);// Set up monitoring
        butSave.setActionCommand("save");
        butExit = new JButton("Sign out");
        butExit.addActionListener(this);// Set up monitoring
        butExit.setActionCommand("exit");
        butCut = new JButton("shear");
        butCut.addActionListener(this);// Set up monitoring
        butCut.setActionCommand("cut");
        butCopy = new JButton("copy");
        butCopy.addActionListener(this);// Set up monitoring
        butCopy.setActionCommand("copy");
        butPaste = new JButton("paste");
        butPaste.addActionListener(this);// Set up monitoring
        butPaste.setActionCommand("paste");
        butAbout = new JButton("about");
        butAbout.addActionListener(this);// Set up monitoring
        butAbout.setActionCommand("about");
        // Toolbar settings button
        toolBar.add(butNewFile);
        toolBar.add(butOpen);
        toolBar.add(butSave);
        toolBar.add(butExit);
        toolBar.add(butCut);
        toolBar.add(butCopy);
        toolBar.add(butPaste);
        toolBar.add(butAbout);
 
        // Instantiate edit window
        textPane = new JTextPane();
        label = new JLabel("www.javayihao.top ----by xiaoyuan");
 
        // Instantiate file selector
        fileChooser = new JFileChooser();
        // Instantiate scroll bar
        scrollPane = new JScrollPane(textPane);
        // Add components to the window container (use boundary layout)
        Container container = getContentPane(); // Get container
        container.add(toolBar, BorderLayout.NORTH); // Add toolbar
        container.add(scrollPane, BorderLayout.CENTER);
        container.add(label, BorderLayout.SOUTH); // Add status bar
 
        // Initialize window
        this.setTitle("Ape notebook");// Window title
        this.setSize(600, 300);// Form size
        this.setIconImage((new ImageIcon("images/logo.png")).getImage());// Set icon
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// Set to shut down process
        int width = Toolkit.getDefaultToolkit().getScreenSize().width;// Get screen width
        int height = Toolkit.getDefaultToolkit().getScreenSize().height;// Get screen height
        this.setLocation((width - 500) / 2, (height - 400) / 2);// Play shows
        this.setVisible(true);// Set form visible
        this.setResizable(true);// Can change form size
    }
 
    /*
     * Event method
     */
    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("newFile")) {
            textPane.setDocument(new DefaultStyledDocument());// Empty documents
        } else if (e.getActionCommand().equals("open")) {
            int i = fileChooser.showOpenDialog(EditorFrame.this); // Show open file dialog
            if (i == JFileChooser.APPROVE_OPTION) { // Click on the dialog box to open the options
                File f = fileChooser.getSelectedFile(); // Selected files
                try {
                    InputStream is = new FileInputStream(f); // Get file input stream
                    textPane.read(is, "d"); // Read in file to text pane
                } catch (Exception ex) {
                    ex.printStackTrace(); // Output error message
                }
            }
        } else if (e.getActionCommand().equals("save")) {
            int i = fileChooser.showSaveDialog(EditorFrame.this); // Show save file dialog
            if (i == JFileChooser.APPROVE_OPTION) { // Click the Save button in the dialog box
                File f = fileChooser.getSelectedFile(); // Selected files
                try {
                    FileOutputStream out = new FileOutputStream(f); // Get file output stream
                    out.write(textPane.getText().getBytes()); // File out
                } catch (Exception ex) {
                    ex.printStackTrace(); // Output error message
                }
            }
        } else if (e.getActionCommand().equals("exit")) {
            System.exit(0);
        } else if (e.getActionCommand().equals("cut")) {
            textPane.cut();// Call text cut method
        } else if (e.getActionCommand().equals("copy")) {
            textPane.copy();// Call copy method
        } else if (e.getActionCommand().equals("paste")) {
            textPane.paste();// Call paste method
        } else if (e.getActionCommand().equals("about")) {
            JOptionPane.showMessageDialog(EditorFrame.this, "www.javayihao.top---Simple text editor demonstration");
        }
    }
 
}
 

Well, it's been more than an hour. It's very comfortable to write and play. The disadvantage of the code is that there are too many duplicate codes. Originally, I planned to customize an event array and use the Stream stream feature in java8 to add events to components. In order to see clearly, that's all
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