java version conversion gadget

In my spare time, I wrote a conversion gadget with the following functions:

• timestamp conversion
• Base64 encoding/decoding
• URL encoding/decoding
• JSON formatting

Time stamp conversion

package org.binbin.container.panel;

import javax.swing.*;
import java.awt.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 *
 *Copyright ? All Rights Reserved by VenusChen
 *
 * @author Hu Haibin/[email protected]
 * 2023/9/28 14:20
 */
public class TimePanel extends JPanel {<!-- -->
    private static final String template = "Current time: TIME Current timestamp: STAMP";
    private static final DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private ExecutorService pool = Executors.newSingleThreadExecutor();
    private boolean stop;
    private JTextField currentTimeField;
    private JButton stopButton;

    private JTextField[] textFields;
    private JButton convertBuffon1;
    private JButton convertBuffon2;
    private JComboBox<String> comboBox1;
    private JComboBox<String> comboBox2;

    public TimePanel() {<!-- -->
        currentTimeField = new JTextField(template);
        currentTimeField.setToolTipText("Please pause for a while before copying");
        currentTimeField.setEditable(false);
        currentTimeField.setBorder(BorderFactory.createEmptyBorder());

        stopButton = new JButton("Pause");
        stopButton.addActionListener(e -> {<!-- -->
            stop = !stop;
            stopButton.setText(stop ? "Continue" : "Pause");
            if(!stop) {<!-- -->
                pool.submit(new TimeDriver());
            }
        });
        pool.submit(new TimeDriver());

        JPanel panel1 = new JPanel();
        panel1.setLayout(new FlowLayout());
        panel1.add(currentTimeField);
        panel1.add(stopButton);
        setLayout(new FlowLayout());
        add(panel1);

        textFields = new JTextField[4];
        for (int i = 0; i < textFields.length; i + + ) {<!-- -->
            textFields[i] = new JTextField(12);
        }
        convertBuffon1 = new JButton("Convert >");
        convertBuffon2 = new JButton("Convert >");
        convertBuffon1.addActionListener(e -> {<!-- -->
            try {<!-- -->
                long time = Long.parseLong(textFields[0].getText());
                int index = comboBox1.getSelectedIndex();
                if(index == 1) {<!-- -->
                    time *= 1000;
                }
                Date date = new Date();
                date.setTime(time);
                textFields[1].setText(df.format(date));
            } catch (Exception ex) {<!-- -->
                ex.printStackTrace();
            }
        });
        convertBuffon2.addActionListener(e -> {<!-- -->
            try {<!-- -->
                Date date = df.parse(textFields[2].getText());
                int index = comboBox2.getSelectedIndex();
                long time = date.getTime();
                if(index == 1) {<!-- -->
                    time /= 1000;
                }
                textFields[3].setText(time + "");
            } catch (Exception ex) {<!-- -->
                ex.printStackTrace();
            }
        });
        comboBox1 = new JComboBox<>();
        comboBox2 = new JComboBox<>();
        comboBox1.addItem("Milliseconds(ms)");
        comboBox1.addItem("seconds(s)");
        comboBox2.addItem("Milliseconds(ms)");
        comboBox2.addItem("seconds(s)");

        JPanel panel2 = new JPanel();
        panel2.add(textFields[0]);
        panel2.add(comboBox1);
        panel2.add(convertBuffon1);
        panel2.add(textFields[1]);

        JPanel panel3 = new JPanel();
        panel3.add(textFields[2]);
        panel3.add(convertBuffon2);
        panel3.add(textFields[3]);
        panel3.add(comboBox2);

        init();

        add(panel2);
        add(panel3);
    }

    public void init() {<!-- -->
        Date date = new Date();
        textFields[0].setText(date.getTime() + "");
        textFields[2].setText(df.format(date));
    }

    class TimeDriver implements Runnable {<!-- -->
        private final DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        @Override
        public void run() {<!-- -->
            while (!stop) {<!-- -->
                try {<!-- -->
                    Date now = new Date();
                    String text = template.replace("TIME", df.format(now)).replace("STAMP", now.getTime() + "");
                    currentTimeField.setText(text);
                    Thread.sleep(20);
                } catch (Exception e) {<!-- -->
                    e.printStackTrace();
                }
            }
        }
    }
}

Base64 encoding/decoding

package org.binbin.container.panel;

import javax.swing.*;
import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Base64;

/**
 *
 *Copyright ? All Rights Reserved by VenusChen
 *
 * @author Hu Haibin/[email protected]
 * 2023/10/27 11:30
 */
public class Base64Panel extends JPanel implements ActionListener {<!-- -->
    private JButton[] buttons;
    private String[] buttonNames = {<!-- -->"Encoding", "Decoding", "Copy", "Clear"};

    private JTextArea sourceTextArea;
    private JTextArea targetTextArea;

    public Base64Panel() {<!-- -->
        setLayout(new BorderLayout());

        sourceTextArea = new JTextArea(10, 20);
        targetTextArea = new JTextArea(10, 20);
        sourceTextArea.setLineWrap(true);
        targetTextArea.setLineWrap(true);
        sourceTextArea.setMargin(new Insets(10, 10, 10, 10));
        targetTextArea.setMargin(new Insets(10, 10, 10, 10));
        targetTextArea.setEditable(false);

        Box box=Box.createHorizontalBox();
        box.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
        box.add(new JScrollPane(sourceTextArea));
        box.add(Box.createHorizontalStrut(10));
        box.add(new JLabel("==>", JLabel.CENTER));
        box.add(Box.createHorizontalStrut(10));
        box.add(new JScrollPane(targetTextArea));
        add(box, BorderLayout.CENTER);

        JPanel buttonPanel = new JPanel();
        buttons = new JButton[buttonNames.length];
        for (int i = 0; i < buttons.length; i + + ) {<!-- -->
            buttons[i] = new JButton(buttonNames[i]);
            buttons[i].addActionListener(this);
            buttonPanel.add(buttons[i]);
        }
        add(buttonPanel, BorderLayout.SOUTH);
    }

    @Override
    public void actionPerformed(ActionEvent e) {<!-- -->
        switch (e.getActionCommand()) {<!-- -->
            case "encoding":
                try {<!-- -->
                    String text = sourceTextArea.getText();
                    String result = Base64.getEncoder().encodeToString(text.getBytes("UTF-8"));
                    targetTextArea.setText(result);
                } catch (Exception ex) {<!-- -->
                    ex.printStackTrace();
                }
                break;
            case "decoding":
                try {<!-- -->
                    String text = sourceTextArea.getText();
                    String result = new String(Base64.getDecoder().decode(text), "UTF-8");
                    targetTextArea.setText(result);
                } catch (Exception ex) {<!-- -->
                    ex.printStackTrace();
                }
                break;
            case "copy":
                try {<!-- -->
                    String text = targetTextArea.getText();
                    Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
                    clipboard.setContents(new StringSelection(text), null);
                    JOptionPane.showMessageDialog(this, "Copy successfully!", "Result", JOptionPane.INFORMATION_MESSAGE);
                } catch (Exception ex) {<!-- -->
                    ex.printStackTrace();
                }
                break;
            case "clear":
                sourceTextArea.setText("");
                targetTextArea.setText("");
                break;
        }
    }
}

URL encoding/decoding

package org.binbin.container.panel;

import javax.swing.*;
import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionListener;
import java.net.URLDecoder;
import java.net.URLEncoder;

/**
 *
 *Copyright ? All Rights Reserved by VenusChen
 *
 * @author Hu Haibin/[email protected]
 * 2023/10/28 11:30
 */
public class UrlPanel extends JPanel {<!-- -->
    private JButton[] buttons;
    private String[] buttonNames = {<!-- -->"Encoding", "Decoding", "Copy", "Clear"};

    private JTextArea sourceTextArea;
    private JTextArea targetTextArea;

    public UrlPanel() {<!-- -->
        setLayout(new BorderLayout());

        Box box=Box.createHorizontalBox();
        box.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
        sourceTextArea = new JTextArea(10, 20);
        targetTextArea = new JTextArea(10, 20);
        sourceTextArea.setLineWrap(true);
        targetTextArea.setLineWrap(true);
        sourceTextArea.setMargin(new Insets(10, 10, 10, 10));
        targetTextArea.setMargin(new Insets(10, 10, 10, 10));
        targetTextArea.setEditable(false);
        box.add(new JScrollPane(sourceTextArea));
        box.add(Box.createHorizontalStrut(10));
        box.add(new JLabel("==>", JLabel.CENTER));
        box.add(Box.createHorizontalStrut(10));
        box.add(new JScrollPane(targetTextArea));
        add(box, BorderLayout.CENTER);

        JPanel buttonPanel = new JPanel();
        buttons = new JButton[buttonNames.length];
        ActionListener listener = e -> {<!-- -->
            switch (e.getActionCommand()) {<!-- -->
                case "encoding":
                    try {<!-- -->
                        String text = sourceTextArea.getText();
                        String result = URLEncoder.encode(text, "UTF-8");
                        targetTextArea.setText(result);
                    } catch (Exception ex) {<!-- -->
                        ex.printStackTrace();
                    }
                    break;
                case "decoding":
                    try {<!-- -->
                        String text = sourceTextArea.getText();
                        String result = URLDecoder.decode(text, "UTF-8");
                        targetTextArea.setText(result);
                    } catch (Exception ex) {<!-- -->
                        ex.printStackTrace();
                    }
                    break;
                case "copy":
                    try {<!-- -->
                        String text = targetTextArea.getText();
                        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
                        clipboard.setContents(new StringSelection(text), null);
                        JOptionPane.showMessageDialog(this, "Copy successfully!", "Result", JOptionPane.INFORMATION_MESSAGE);
                    } catch (Exception ex) {<!-- -->
                        ex.printStackTrace();
                    }
                    break;
                case "clear":
                    sourceTextArea.setText("");
                    targetTextArea.setText("");
                    break;
            }
        };
        for (int i = 0; i < buttons.length; i + + ) {<!-- -->
            buttons[i] = new JButton(buttonNames[i]);
            buttons[i].addActionListener(listener);
            buttonPanel.add(buttons[i]);
        }
        add(buttonPanel, BorderLayout.SOUTH);
    }
}

JSON formatting

package org.binbin.container.panel;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson2.JSONObject;

import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 *
 *Copyright ? All Rights Reserved by VenusChen
 *
 * @author Hu Haibin/[email protected]
 * 2023/11/1 14:38
 */
public class JsonPanel extends JPanel implements ActionListener, DocumentListener {<!-- -->
    private JButton[] buttons;
    private String[] buttonNames = {<!-- -->"Copy", "Clear"};

    private JTextArea sourceTextArea;
    private JTextArea targetTextArea;

    public JsonPanel() {<!-- -->
        setLayout(new BorderLayout());

        sourceTextArea = new JTextArea(10, 20);
        targetTextArea = new JTextArea(10, 20);
        sourceTextArea.setLineWrap(true);
        targetTextArea.setLineWrap(true);
        sourceTextArea.setMargin(new Insets(10, 10, 10, 10));
        targetTextArea.setMargin(new Insets(10, 10, 10, 10));
        sourceTextArea.setTabSize(2);
        targetTextArea.setTabSize(2);
        targetTextArea.setEditable(false);

        Box box=Box.createHorizontalBox();
        box.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
        box.add(new JScrollPane(sourceTextArea));
        box.add(Box.createHorizontalStrut(10));
        box.add(new JLabel("==>", JLabel.CENTER));
        box.add(Box.createHorizontalStrut(10));
        box.add(new JScrollPane(targetTextArea));
        add(box, BorderLayout.CENTER);

        JPanel buttonPanel = new JPanel();
        buttons = new JButton[buttonNames.length];
        for (int i = 0; i < buttons.length; i + + ) {<!-- -->
            buttons[i] = new JButton(buttonNames[i]);
            buttons[i].addActionListener(this);
            buttonPanel.add(buttons[i]);
        }
        add(buttonPanel, BorderLayout.SOUTH);

        sourceTextArea.getDocument().addDocumentListener(this);
    }

    @Override
    public void actionPerformed(ActionEvent e) {<!-- -->
        switch (e.getActionCommand()) {<!-- -->
            case "copy":
                try {<!-- -->
                    String text = targetTextArea.getText();
                    Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
                    clipboard.setContents(new StringSelection(text), null);
                    JOptionPane.showMessageDialog(this, "Copy successfully!", "Result", JOptionPane.INFORMATION_MESSAGE);
                } catch (Exception ex) {<!-- -->
                    ex.printStackTrace();
                }
                break;
            case "clear":
                sourceTextArea.setText("");
                targetTextArea.setText("");
                break;
        }
    }

    private void format() {<!-- -->
        try {<!-- -->
            String text = sourceTextArea.getText();
            if(text == null || text.trim().equals("")) {<!-- -->
                return;
            }
            JSONObject object = JSONObject.parseObject(text);
            String pretty = JSON.toJSONString(object, SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue, SerializerFeature.WriteDateUseDateFormat);
            targetTextArea.setText(pretty);
        } catch (Exception ex) {<!-- -->
            targetTextArea.setText("");
        }
    }

    @Override
    public void insertUpdate(DocumentEvent documentEvent) {<!-- -->
        format();
    }

    @Override
    public void removeUpdate(DocumentEvent documentEvent) {<!-- -->
        format();
    }

    @Override
    public void changedUpdate(DocumentEvent documentEvent) {<!-- -->
        format();
    }
}

Tools

package org.binbin.util;

import javax.swing.*;
import java.awt.*;

/**
 *
 *Copyright ? All Rights Reserved by VenusChen
 *
 * @author Hu Haibin/[email protected]
 * 2023/10/28 11:05
 */
public class FrameUtil {<!-- -->

    public static void center(JFrame frame) {<!-- -->
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        frame.setLocation((screenSize.width - frame.getWidth()) / 2, (screenSize.height - frame.getHeight()) / 2);
    }
}

Main form

package org.binbin.container;

import org.binbin.container.panel.Base64Panel;
import org.binbin.container.panel.JsonPanel;
import org.binbin.container.panel.TimePanel;
import org.binbin.container.panel.UrlPanel;
import org.binbin.util.FrameUtil;

import javax.swing.*;
import java.awt.event.KeyEvent;

/**
 *
 *Copyright ? All Rights Reserved by VenusChen
 *
 * @author Hu Haibin/[email protected]
 * 2023/10/28 10:59
 */
public class MainFrame extends JFrame {<!-- -->
    private static final String[] titles = new String[]{<!-- -->"Timestamp conversion", "Base64 encoding/decoding", "URL encoding/decoding", "JSON format change"};
    private JTabbedPane tabbedPane;

    private JPanel base64Panel;
    private JPanel urlPanel;
    private TimePanel timePanel;
    private JsonPanel jsonPanel;

    public MainFrame() {<!-- -->
        setTitle("Toolbox v1.0");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(600, 400);
        FrameUtil.center(this);

        JMenuBar bar = new JMenuBar();
        setJMenuBar(bar);
        JMenu featureMenu = new JMenu("Function(F)");
        featureMenu.setMnemonic(KeyEvent.VK_F);
        for (int i = 0; i < titles.length; i + + ) {<!-- -->
            JMenuItem item = new JMenuItem(titles[i]);
            final int index = i;
            item.addActionListener(e -> {<!-- -->
                if(tabbedPane.getSelectedIndex() == 0) {<!-- -->
                    timePanel.init();
                }
                tabbedPane.setSelectedIndex(index);
            });
            featureMenu.add(item);
        }

        featureMenu.addSeparator();
        JMenuItem exitItem = new JMenuItem("Exit(E)");
        exitItem.setMnemonic(KeyEvent.VK_E);
        exitItem.addActionListener(e -> {<!-- -->
            System.exit(0);
        });
        featureMenu.add(exitItem);

        bar.add(featureMenu);

        JMenu helpMenu = new JMenu("Help(H)");
        helpMenu.setMnemonic(KeyEvent.VK_H);
        JMenuItem aboutItem = new JMenuItem("About (A)");
        aboutItem.setMnemonic(KeyEvent.VK_A);
        aboutItem.addActionListener(e -> {<!-- -->
            String msg = "<html><body><p style='font-weight:bold;font-size:14px;'>Toolbox v1.0</p><br/><p style='font-weight:normal'>Author: Bin Bin<br/>Email: [email protected]<br/>Date: 2023/09/28<br /><br/>Welcome to use this toolbox! If you have any suggestions, please email the author.</p></body></html>";
            JOptionPane.showMessageDialog(this, msg, "About", JOptionPane.INFORMATION_MESSAGE);
        });
        helpMenu.add(aboutItem);
        bar.add(helpMenu);

        tabbedPane = new JTabbedPane();
        add(tabbedPane);

        base64Panel = new Base64Panel();
        urlPanel = new UrlPanel();
        timePanel = new TimePanel();
        jsonPanel = new JsonPanel();

        tabbedPane.add(titles[0], timePanel);
        tabbedPane.add(titles[1], base64Panel);
        tabbedPane.add(titles[2], urlPanel);
        tabbedPane.add(titles[3], jsonPanel);
        tabbedPane.addChangeListener(e -> {<!-- -->
            if(tabbedPane.getSelectedIndex() == 2) {<!-- -->
                timePanel.init();
            }
        });
    }
}

Startup class

package org.binbin;

import org.binbin.container.MainFrame;

import java.awt.*;

/**
 * small tools
 * @author binbin
 * 2023/10/27 11:30
 */
public class App
{<!-- -->
    public static void main( String[] args )
    {<!-- -->
        EventQueue.invokeLater(() -> {<!-- -->
            new MainFrame().setVisible(true);
        });
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.hbin</groupId>
  <artifactId>tool</artifactId>
  <version>1.0-SNAPSHOT</version>

  <name>info</name>
  <url>www.binbin.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>2.0.32</version>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <!-- Use the maven-assembly-plugin plugin to package -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-assembly-plugin</artifactId>
        <version>3.2.0</version>
        <configuration>
          <archive>
            <manifest>
              <mainClass>org.binbin.App</mainClass>
            </manifest>
          </archive>
          <descriptorRefs>
            <!-- End of executable jar name -->
            <descriptorRef>jar-with-dependencies</descriptorRef>
          </descriptorRefs>
        </configuration>
        <executions>
          <execution>
            <id>make-assembly</id>
            <phase>package</phase>
            <goals>
              <goal>single</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <!--Configuration to generate Javadoc package-->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <version>2.10.4</version>
        <configuration>
          <!--Specify encoding as UTF-8-->
          <encoding>UTF-8</encoding>
          <aggregate>true</aggregate>
          <charset>UTF-8</charset>
          <docencoding>UTF-8</docencoding>
        </configuration>
        <executions>
          <execution>
            <id>attach-javadocs</id>
            <goals>
              <goal>jar</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <!--Configuration to generate source code package-->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-source-plugin</artifactId>
        <version>3.0.1</version>
        <executions>
          <execution>
            <id>attach-sources</id>
            <goals>
              <goal>jar</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

Operation renderings

1. Menu bar

2. About

3. Function page