Prepared source for version 0.2.0

doc/Changelog English.txt

@@ -1,3 +1,8 @@
+Randochoose 0.2.0 Alpha
+- Completion: 13th April, 2022
+- The Java VM processing bug has been fixed. If you close this program, you REALLY close it now! :)
+- You want to profit from features and bugfixes like this, don't you? The Randochoose Update Management will be the feature which can serve you in this case.
+
 Randochoose 0.1.0 Alpha
 - Completion: 11th April, 2022
 - Software is completely legalised.

src/randopackage/RandochooseMain.java

@@ -3,18 +3,24 @@
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.*;
+import java.io.File;
 import java.util.concurrent.*;
 
 public class RandochooseMain {
 
 	public static int majorVer = 0;
-	public static int minorVer1 = 1;
+	public static int minorVer1 = 2;
 	public static int minorVer2 = 0;
 
-	public static void main(String[] args) {		
+	public static void main(String[] args) {
+		String link = "https://raw.githubusercontent.com/Tech-FZ/randochoose/main/vercheck.rdc";
+		File out = new File("vercheck.rdc");
+		new Thread(new RandochooseUpdate(link, out)).start();
+		RandochooseUpdateStageTwo.checkStage(majorVer, minorVer1, minorVer2, false);
+
 		JFrame mainFrame = new JFrame();
 		mainFrame.setTitle("Randochoose");
-		mainFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+		mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 		mainFrame.setSize(500, 300);
 		mainFrame.setLocationRelativeTo(null);
 
@@ -41,7 +47,7 @@ public static void main(String[] args) {
 
 		mainPanel.add(textPanel);
 
-		JPanel btnPanel = new JPanel(new GridLayout(1, 2, 10, 10));
+		JPanel btnPanel = new JPanel(new GridLayout(1, 3, 10, 10));
 
 		JButton chooseCandidateBtn = new JButton("Choose!");
 		chooseCandidateBtn.setFont(new Font("Arial", 0, 14));
@@ -54,6 +60,20 @@ public void actionPerformed(ActionEvent arg0) {
 
 		btnPanel.add(chooseCandidateBtn);
 
+		JButton updateBtn = new JButton("Check for updates");
+		updateBtn.setFont(new Font("Arial", 0, 14));
+
+		updateBtn.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				String link = "https://raw.githubusercontent.com/Tech-FZ/randochoose/main/vercheck.rdc";
+				File out = new File("vercheck.rdc");
+				new Thread(new RandochooseUpdate(link, out)).start();
+				RandochooseUpdateStageTwo.checkStage(majorVer, minorVer1, minorVer2, true);
+			}
+		});
+
+		btnPanel.add(updateBtn);
+
 		JButton aboutBtn = new JButton("About");
 		aboutBtn.setFont(new Font("Arial", 0, 14));
 

src/randopackage/RandochooseUpdate.java

@@ -0,0 +1,102 @@
+package randopackage;
+
+import java.awt.Font;
+import java.awt.GridLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.*;
+import java.net.*;
+
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+
+public class RandochooseUpdate implements Runnable {
+	String link;
+	File out;
+
+	public RandochooseUpdate(String link, File out) {
+		this.link = link;
+		this.out = out;
+	}
+
+	@Override
+	public void run() {
+		try {
+			URL url = new URL(link);
+			HttpURLConnection http = (HttpURLConnection)url.openConnection();
+			BufferedInputStream in = new BufferedInputStream(http.getInputStream());
+			FileOutputStream fos = new FileOutputStream(out);
+			BufferedOutputStream bout = new BufferedOutputStream(fos, 1024);
+			byte[] buffer = new byte[1024];
+			int read = 0;
+
+			while((read = in.read(buffer, 0, 1024)) >= 0) {
+				bout.write(buffer, 0, read);
+			}
+
+			bout.close();
+			in.close();
+		}
+
+		catch (Exception e) {
+			noInternet();
+		}
+
+	}
+
+	public static void noInternet() {
+		JDialog noEntryDialog = new JDialog();
+		noEntryDialog.setTitle("Randochoose Update Management");
+
+		JPanel noEntryPanel = new JPanel(new GridLayout(0, 1, 10, 10));
+
+		JLabel noticeLabel = new JLabel("Sorry, but Randochoose failed to connect to its GitHub repository!");
+		noticeLabel.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(noticeLabel);
+
+		JLabel noticeLabel2 = new JLabel("This might have one of the following reasons:");
+		noticeLabel2.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(noticeLabel2);
+
+		JLabel causeLbl1 = new JLabel("- You're most likely not connected to the internet. Please check your");
+		causeLbl1.setFont(new Font("Arial", 0, 14));
+		noEntryPanel.add(causeLbl1);
+
+		JLabel causeLbl2 = new JLabel("  internet connection and try again.");
+		causeLbl2.setFont(new Font("Arial", 0, 14));
+		noEntryPanel.add(causeLbl2);
+
+		JLabel causeLbl3 = new JLabel("- If it still fails, your administrator might have blocked access to GitHub.");
+		causeLbl3.setFont(new Font("Arial", 0, 14));
+		noEntryPanel.add(causeLbl3);
+
+		JLabel causeLbl4 = new JLabel("  Contact him or her for further information.");
+		causeLbl4.setFont(new Font("Arial", 0, 14));
+		noEntryPanel.add(causeLbl4);
+
+		JLabel causeLbl5 = new JLabel("- If these are all not the case, GitHub servers might be down at the moment.");
+		causeLbl5.setFont(new Font("Arial", 0, 14));
+		noEntryPanel.add(causeLbl5);
+
+		JLabel causeLbl6 = new JLabel("  In this case, try again when GitHub is online again.");
+		causeLbl6.setFont(new Font("Arial", 0, 14));
+		noEntryPanel.add(causeLbl6);
+
+		JButton okBtn = new JButton("OK!");
+		okBtn.setFont(new Font("Arial", 0, 14));
+
+		okBtn.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				noEntryDialog.setVisible(false);
+			}
+		});
+
+		noEntryPanel.add(okBtn);
+
+		noEntryDialog.add(noEntryPanel);
+		noEntryDialog.pack();
+		noEntryDialog.setVisible(true);
+	}
+}

src/randopackage/RandochooseUpdateStageTwo.java

@@ -0,0 +1,167 @@
+package randopackage;
+
+import java.io.*;
+import java.net.URI;
+import java.net.URISyntaxException;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+
+public class RandochooseUpdateStageTwo {
+	static String[] newestVer = new String[3];
+	static int[] newestVerInt = new int[3];
+
+	public static void checkStage(int majorVer, int minorVer1, int minorVer2, boolean manual) {
+		File file = new File("vercheck.rdc");
+
+		if (!file.canRead() || !file.isFile()) {
+			@SuppressWarnings("unused")
+			BufferedReader in = null;
+		}
+
+		try {
+			BufferedReader in = new BufferedReader(new FileReader("vercheck.rdc"));
+			String line = null;
+
+			int i = 0;
+
+			while ((line = in.readLine()) != null) {
+				newestVer[i] = line;
+				i++;
+			}
+
+			if (in != null) {
+				try {
+					in.close();
+				}
+
+				catch (Exception e) {
+
+				}
+			}
+		}
+
+		catch (Exception e) {
+
+		}
+
+		int i = 0;
+
+		while (i < newestVer.length) {
+			int verPart = Integer.parseInt(newestVer[i]);
+			newestVerInt[i] = verPart;
+			i++;
+		}
+
+		if (minorVer2 < newestVerInt[2] || minorVer1 < newestVerInt[1] || majorVer < newestVerInt[0]) {
+			int[] currentVer = {majorVer, minorVer1, minorVer2};
+			newVerAvailable(currentVer, newestVerInt);
+		}
+
+		else {
+			if (manual) {
+				isLatest();
+			}
+		}
+	}
+
+	public static void newVerAvailable(int[] currVer, int[] latestVer) {
+		JDialog noEntryDialog = new JDialog();
+		noEntryDialog.setTitle("Randochoose Update Management");
+
+		JPanel noEntryPanel = new JPanel(new GridLayout(0, 1, 10, 10));
+
+		JLabel noticeLabel = new JLabel("An update has been released.");
+		noticeLabel.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(noticeLabel);
+
+		JLabel noticeLabel2 = new JLabel("You're currently running version " + currVer[0] + "." + currVer[1] + "." + currVer[2]);
+		noticeLabel2.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(noticeLabel2);
+
+		JLabel noticeLabel3 = new JLabel("The latest version is " + latestVer[0] + "." + latestVer[1] + "." + latestVer[2]);
+		noticeLabel3.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(noticeLabel3);
+
+		JLabel questionLbl = new JLabel("Do you want to be redirected to the GitHub repository of");
+		questionLbl.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(questionLbl);
+
+		JLabel questionLbl2 = new JLabel("Randochoose to download the latest version?");
+		questionLbl2.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(questionLbl2);
+
+		JPanel btnPanel = new JPanel(new GridLayout(1, 2, 10, 10));
+
+		JButton yesBtn = new JButton("Yes");
+		yesBtn.setFont(new Font("Arial", 0, 14));
+
+		yesBtn.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				Desktop desk = Desktop.getDesktop();
+
+				try {
+					desk.browse(new URI("https://github.com/Tech-FZ/randochoose/releases"));
+				} catch (IOException e) {
+					// TODO Auto-generated catch block
+					e.printStackTrace();
+				} catch (URISyntaxException e) {
+					// TODO Auto-generated catch block
+					e.printStackTrace();
+				}
+
+				noEntryDialog.setVisible(false);
+			}
+		});
+
+		btnPanel.add(yesBtn);
+
+		JButton noBtn = new JButton("No");
+		noBtn.setFont(new Font("Arial", 0, 14));
+
+		noBtn.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				noEntryDialog.setVisible(false);
+			}
+		});
+
+		btnPanel.add(noBtn);
+
+		noEntryPanel.add(btnPanel);
+
+		noEntryDialog.add(noEntryPanel);
+		noEntryDialog.pack();
+		noEntryDialog.setVisible(true);
+	}
+
+	public static void isLatest() {
+		JDialog noEntryDialog = new JDialog();
+		noEntryDialog.setTitle("Randochoose Update Management");
+
+		JPanel noEntryPanel = new JPanel(new GridLayout(3, 1, 10, 10));
+
+		JLabel noticeLabel = new JLabel("Don't know if you see this as good or bad, but...");
+		noticeLabel.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(noticeLabel);
+
+		JLabel noticeLabel2 = new JLabel("...you're already running the latest version.");
+		noticeLabel2.setFont(new Font("Arial", 0, 16));
+		noEntryPanel.add(noticeLabel2);
+
+		JButton okBtn = new JButton("OK!");
+		okBtn.setFont(new Font("Arial", 0, 14));
+
+		okBtn.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				noEntryDialog.setVisible(false);
+			}
+		});
+
+		noEntryPanel.add(okBtn);
+
+		noEntryDialog.add(noEntryPanel);
+		noEntryDialog.pack();
+		noEntryDialog.setVisible(true);
+	}
+}