Bugfixes and optimizations

Fixes a bug where the server version is not updated on load.
Optimized downloading of all jar files.

README.md

@@ -1,5 +1,5 @@
 # Minecraft-Server-Launcher
-I originally created this software in 2013 using AutoIt. Since I am now learning Java, and I have wanted to rewrite it for a long time, I am trying to recreate it in Java. It is currently missing mostly everything, but it's nothing a lot of work can't fix.
+I originally created this software in 2013 using AutoIt. Since I am now learning Java, I have recreated it in Java.
 The original version can be found at: https://knarcraft.net/Downloads/Bungeeminecraftserverlauncher/
 Its goal is to do everything the original does, just better. The original is 1595 lines of code repetition and dirty code. I had no prior programming experience when I first started working on the original, which is why it became such a mess.
 

src/net/knarcraft/serverlauncher/Main.java

@@ -27,7 +27,7 @@ import static net.knarcraft.serverlauncher.Shared.stringBetween;
 
 public class Main {
     @SuppressWarnings("CanBeFinal")
-    public static String appDir;
+    private static String appDir;
     private static boolean running = false;
 
     static {
@@ -37,6 +37,11 @@ public class Main {
             e.printStackTrace();
             System.exit(1);
         }
+        try (PrintWriter file = new PrintWriter(Main.getAppDir() + File.separator + "latestrun.log")) {
+            file.print("");
+        } catch (IOException e ) {
+            e.printStackTrace();
+        }
     }
 
     public static void main(String[] args) {
@@ -45,7 +50,6 @@ public class Main {
 				setup();
 				new ServerConsoles();
                 Profile.load();
-
 				ScheduledExecutorService exec = Executors.newSingleThreadScheduledExecutor();
 				exec.scheduleAtFixedRate(Main::updateConsoles, 10, 500, TimeUnit.MILLISECONDS);
 			} catch (Exception e) {
@@ -63,6 +67,10 @@ public class Main {
 		}
 	}
 
+	public static String getAppDir() {
+        return appDir;
+    }
+
     /**
      * Reads from server processes, and writes the output to consoles.
      */

src/net/knarcraft/serverlauncher/profile/Profile.java

@@ -32,9 +32,9 @@ public class Profile {
     private static final ArrayList<Profile> profiles = new ArrayList<>();
     private static Profile current;
     private static GUI gui;
-    private static final String profilesDir = Main.appDir + File.separator +  "files";
-    private static final String profilesFile = Main.appDir + File.separator +  "files" + File.separator + "Profiles.txt";
-    private static final String jarDir = Main.appDir + File.separator + "files" + File.separator + "Jars" + File.separator;
+    private static final String profilesDir = Main.getAppDir() + File.separator +  "files";
+    private static final String profilesFile = Main.getAppDir() + File.separator +  "files" + File.separator + "Profiles.txt";
+    private static final String jarDir = Main.getAppDir() + File.separator + "files" + File.separator + "Jars" + File.separator;
 
     private final ArrayList<Collection> collections;
     private final String name;
@@ -139,6 +139,11 @@ public class Profile {
         this.downloadJars = value;
     }
 
+    /**
+     * Set the current profile to the profile with a certain name.
+     *
+     * @param name  The name of the profile
+     */
     public static  void setCurrent(String name) {
         for (Profile profile : profiles) {
             if (profile.name.equals(name)) {
@@ -456,6 +461,12 @@ public class Profile {
         }
     }
 
+    /**
+     * Parses a profile, and creates a profile with the data.
+     *
+     * @param profileData   The data of the new profile
+     * @return              The new profile
+     */
     private static Profile parseProfile(String[] profileData) {
         return new Profile(
                 profileData[0],
@@ -465,6 +476,12 @@ public class Profile {
         );
     }
 
+    /**
+     * Parses a server, and creates a new collection.
+     *
+     * @param profile       The profile which to add the collection
+     * @param serverData    The data to parse
+     */
     private static void parseServer(Profile profile, String[] serverData) {
         profile.collections.add(new Collection(
                 serverData[0],
@@ -480,6 +497,11 @@ public class Profile {
         );
     }
 
+    /**
+     * Downloads all jars to the program directory.
+     *
+     * @throws IOException  On version file failure or folder creation failure
+     */
     public static void downloadJars() throws IOException {
         if (!new File(jarDir).exists() && !new File(jarDir).mkdirs()) {
             JOptionPane.showMessageDialog(
@@ -490,146 +512,64 @@ public class Profile {
             );
             throw new FileNotFoundException("Unable to create jars folder");
         }
-        downloadSimple("Spigot");
-        downloadSimple("Craftbukkit");
-        downloadSimple("MCPCplus");
-        downloadMixed("Vanilla");
-        downloadMixed("Snapshot");
-        downloadSponge();
-        downloadBungee();
+        try {
+            downloadAll();
             gui.setStatus("Finished downloading jars");
-    }
-
-    private static void downloadSimple(String typeName) throws FileNotFoundException {
-        ServerType type = ServerType.getByName(typeName);
-        String url = Objects.requireNonNull(type).getDownloadURL();
-        String name = type.getName();
-        Boolean success;
-        for (String version : type.getVersions()) {
-            File file = new File(jarDir + type.getName() + version + ".jar");
-            if (!file.isFile()) {
-                Path filePath = Paths.get(jarDir + type.getName() + version + ".jar");
-                if (gui != null) {
-                    gui.setStatus("Downloading: " + name + version + ".jar");
-                }
-                success = downloadFile(url + name + version + ".jar", filePath);
-                if (!success) {
-                    if (gui != null) {
-                        gui.setStatus("Error downloading: " + name + version + ".jar");
-                    }
-                    throw new FileNotFoundException("Error downloading: " + name + version + ".jar");
-                }
-            }
+        } catch (FileNotFoundException e) {
+            gui.setStatus("One or more downloads failed: " + e.getMessage());
         }
     }
 
-    private static void downloadMixed(String typeName) throws IOException {
-        AdvancedServerType type = (AdvancedServerType) ServerType.getByName(typeName);
-        String url = Objects.requireNonNull(type).getDownloadURL();
-        String name = type.getName();
-        String versionText;
-        String newestVersion;
-        Boolean success;
+    /**
+     * Downloads jar files for all possible server versions.
+     *
+     * @throws IOException If a jar fails to download.
+     */
+    private static void downloadAll() throws IOException {
+        for (ServerType type : ServerType.getServerTypes()) {
+            String url = Objects.requireNonNull(type).getDownloadURL(), name = type.getName(), newestVersion;
+            AdvancedServerType advType = type instanceof AdvancedServerType ? (AdvancedServerType) type : null;
             for (String version : type.getVersions()) {
-            File file = new File(jarDir + type.getName() + version + ".jar");
-            Path filePath = Paths.get(jarDir + type.getName() + version + ".jar");
+                Boolean success;
                 if (gui != null) {
                     gui.setStatus("Downloading: " + name + version + ".jar");
                 }
+                File file = new File(jarDir + type.getName() + version + ".jar");
+                Path filePath = Paths.get(jarDir + type.getName() + version + ".jar");
+                switch (type.getName()) {
+                    case "Vanilla":
+                    case "Snapshot":
                         if (version.equals("Latest")) {
-                try {
-                    versionText = readFile(type.getVersionURL());
-                } catch (IOException e) {
-                    throw new IOException("Error reading: " + type.getVersionURL());
-                }
-                newestVersion = stringBetween(versionText, type.getSrcStart(), type.getSrcEnd());
-                if (!file.isFile() || !newestVersion.equals(getVersion(name))) {
-                    success = downloadFile(
-                            url + newestVersion + type.getDownloadURLPart() + newestVersion + ".jar",
-                            filePath
-                    );
+                            newestVersion = stringBetween(readFile(Objects.requireNonNull(advType).getVersionURL()), advType.getSrcStart(), advType.getSrcEnd());
                             setVersion(name, newestVersion);
-                    if (!success) {
-                        if (gui != null) {
-                            gui.setStatus("Error downloading: " + name + version + ".jar");
-                        }
-                        throw new FileNotFoundException("Error downloading: " + name + version + ".jar");
-                    }
-                }
+                            success = (file.isFile() && newestVersion.equals(getVersion(name))) || downloadFile(url + newestVersion + advType.getDownloadURLPart() + newestVersion + ".jar", filePath);
                         } else {
-                if (!file.isFile()) {
-                    success = downloadFile(url + version + type.getDownloadURLPart() + version + ".jar", filePath);
-                    if (!success) {
-                        if (gui != null) {
-                            gui.setStatus("Error downloading: " + name + version + ".jar");
+                            success = file.isFile() || downloadFile(url + version + Objects.requireNonNull(advType).getDownloadURLPart() + version + ".jar", filePath);
                         }
-                        throw new FileNotFoundException("Error downloading: " + name + version + ".jar");
-                    }
-                }
-            }
-        }
-    }
-
-    private static void downloadSponge() throws IOException {
-        AdvancedServerType type = (AdvancedServerType) ServerType.getByName("SpongeVanilla");
-        String url = Objects.requireNonNull(type).getDownloadURL();
-        String name = type.getName();
-        String versionText;
-        String newestVersion;
-        Boolean success;
-        for (String version : type.getVersions()) {
-            File file = new File(jarDir + name + version + ".jar");
-            Path filePath = Paths.get(jarDir + name + version + ".jar");
-            if (gui != null) {
-                gui.setStatus("Downloading: " + name + version + ".jar");
-            }
-            try {
-                versionText = readFile(type.getVersionURL() + version);
-            } catch (IOException e) {
-                throw new IOException("Error reading: " + type.getVersionURL());
-            }
-            newestVersion = stringBetween(versionText, type.getSrcStart(), type.getSrcEnd());
-            if (!file.isFile()) {
-                success = downloadFile(
-                        url + newestVersion + type.getDownloadURLPart() + newestVersion + ".jar",
-                        filePath
-                );
-                if (!success) {
-                    if (gui != null) {
-                        gui.setStatus("Error downloading: " + name + version + ".jar");
-                    }
-                    throw new FileNotFoundException("Error downloading: " + name + version + ".jar");
-                }
-            }
-        }
-    }
-
-    private static void downloadBungee() throws IOException {
-        AdvancedServerType type = (AdvancedServerType) ServerType.getByName("Bungee");
-        String url = Objects.requireNonNull(type).getDownloadURL();
-        String name = type.getName();
-        String versionText;
-        String newestVersion;
-        Boolean success;
-        File file = new File(jarDir + type.getName() + ".jar");
-        Path filePath = Paths.get(jarDir + type.getName() + ".jar");
-        if (gui != null) {
-            gui.setStatus("Downloading: " + name + ".jar");
-        }
-        try {
-            versionText = readFile(type.getVersionURL());
-        } catch (IOException e) {
-            throw new IOException("Error reading: " + type.getVersionURL());
-        }
-        newestVersion = stringBetween(versionText, type.getSrcStart(), type.getSrcEnd());
-        if (!file.isFile() || !newestVersion.equals(getVersion(name))) {
-            success = downloadFile(url, filePath);
+                        break;
+                    case "Spigot":
+                    case "Craftbukkit":
+                    case "MCPCplus":
+                        success = file.isFile() || downloadFile(url + name + version + ".jar", filePath);
+                        break;
+                    case "SpongeVanilla":
+                        newestVersion = stringBetween(readFile(Objects.requireNonNull(advType).getVersionURL() + version), advType.getSrcStart(), advType.getSrcEnd());
+                        success = file.isFile() || downloadFile(url + newestVersion + advType.getDownloadURLPart() + newestVersion + ".jar", filePath);
+                        break;
+                    case "Bungee":
+                        newestVersion = stringBetween(readFile(Objects.requireNonNull(advType).getVersionURL()), advType.getSrcStart(), advType.getSrcEnd());
                         setVersion(name, newestVersion);
+                        success = (file.isFile() && newestVersion.equals(getVersion(name))) || downloadFile(url, filePath);
+                        break;
+                    default:
+                        success = true;
+                }
                 if (!success) {
                     if (gui != null) {
-                    gui.setStatus("Error downloading: " + name + ".jar");
+                        gui.setStatus("Error downloading: " + name + version + ".jar");
+                    }
+                    throw new FileNotFoundException("Error downloading: " + name + version + ".jar");
                 }
-                throw new FileNotFoundException("Error downloading: " + name + ".jar");
             }
         }
     }

src/net/knarcraft/serverlauncher/server/Server.java

@@ -25,7 +25,7 @@ public class Server {
     private static final String[] ramList = {
             "512M", "1G", "2G", "3G", "4G", "5G", "6G", "7G", "8G", "9G", "10G","11G", "12G", "13G", "14G", "15G", "16G"
     };
-    private static final String jarDir = Main.appDir + File.separator + "files" + File.separator + "Jars" + File.separator;
+    private static final String jarDir = Main.getAppDir() + File.separator + "files" + File.separator + "Jars" + File.separator;
 
     private final String name;
     private String path;
@@ -293,9 +293,9 @@ public class Server {
                 ProcessBuilder builder;
                 String serverPath;
                 if (Profile.getCurrent().getDownloadJars() && !type.getName().equals("Custom")) {
-                    serverPath = "\"" + jarDir + this.getType() + "\"";
+                    serverPath = jarDir + this.getType();
                 } else  {
-                    serverPath = "\"" + this.path + File.separator + this.getType() + "\"";
+                    serverPath = this.path + File.separator + this.getType();
                 }
                 builder = new ProcessBuilder(
                         "java",
@@ -351,12 +351,7 @@ public class Server {
         AdvancedServerType type;
         File file = new File(this.path + File.separator + this.getType());
         Path filePath = Paths.get(this.path + File.separator + this.getType());
-        String versionText;
-        String newestVersion;
-        String url = this.type.getDownloadURL();
-        String name = this.type.getName();
-        String ver = this.serverVersion;
-        boolean success;
+        String versionText, newestVersion, url = this.type.getDownloadURL(), name = this.type.getName(), ver = this.serverVersion;
         switch (this.type.getName()) {
             case "Custom":
                 if (!file.isFile()) {
@@ -366,12 +361,9 @@ public class Server {
             case "Spigot":
             case "Craftbukkit":
             case "MCPCplus":
-                if (!file.isFile()) {
-                    success = downloadFile(url + name + ver + ".jar", filePath);
-                    if (!success) {
+                if (!(file.isFile() || downloadFile(url + name + ver + ".jar", filePath))) {
                     throw new FileNotFoundException("Jar file could not be downloaded.");
                 }
-                }
                 break;
             case "Vanilla":
             case "Snapshot":
@@ -384,23 +376,16 @@ public class Server {
                     }
                     newestVersion = stringBetween(versionText, type.getSrcStart(), type.getSrcEnd());
                     if (!file.isFile() || !newestVersion.equals(this.getVersion(name))) {
-                        success = downloadFile(
-                                url + newestVersion + type.getDownloadURLPart() + newestVersion + ".jar",
-                                filePath
-                        );
                         this.setVersion(name, newestVersion);
-                        if (!success) {
+                        if (!downloadFile(url + newestVersion + type.getDownloadURLPart() + newestVersion + ".jar", filePath)) {
                             throw new FileNotFoundException("Jar file could not be downloaded.");
                         }
                     }
                 } else {
-                    if (!file.isFile()) {
-                        success = downloadFile(url + ver + type.getDownloadURLPart() + ver + ".jar", filePath);
-                        if (!success) {
+                    if (!(file.isFile() || downloadFile(url + ver + type.getDownloadURLPart() + ver + ".jar", filePath))) {
                         throw new FileNotFoundException("Jar file could not be downloaded.");
                     }
                 }
-                }
                 break;
             case "SpongeVanilla":
                 type = (AdvancedServerType) this.type;
@@ -411,12 +396,8 @@ public class Server {
                 }
                 newestVersion = stringBetween(versionText, type.getSrcStart(), type.getSrcEnd());
                 if (!file.isFile() || !newestVersion.equals(this.getVersion(name))) {
-                    success = downloadFile(
-                            url + newestVersion + type.getDownloadURLPart() + newestVersion + ".jar",
-                            filePath
-                    );
                     this.setVersion(name, newestVersion);
-                    if (!success) {
+                    if (!downloadFile(url + newestVersion + type.getDownloadURLPart() + newestVersion + ".jar", filePath)) {
                         throw new FileNotFoundException("Jar file could not be downloaded.");
                     }
                 }
@@ -430,9 +411,8 @@ public class Server {
                 }
                 newestVersion = stringBetween(versionText, type.getSrcStart(), type.getSrcEnd());
                 if (!file.isFile() || !newestVersion.equals(this.getVersion(name))) {
-                    success = downloadFile(url, filePath);
                     this.setVersion(name, newestVersion);
-                    if (!success) {
+                    if (!downloadFile(url, filePath)) {
                         throw new FileNotFoundException("Jar file could not be downloaded.");
                     }
                 }

src/net/knarcraft/serverlauncher/server/ServerType.java

@@ -42,6 +42,11 @@ public class ServerType {
 		return serverTypes;
 	}
 
+	/**
+	 * Gets a list of all server types' names.
+	 *
+	 * @return	A list of strings
+	 */
 	public static String[] getTypeNames() {
 		ArrayList<ServerType> types = ServerType.getServerTypes();
 		String[] serverTypes = new String[types.size()];
@@ -51,6 +56,12 @@ public class ServerType {
 		return serverTypes;
 	}
 
+	/**
+	 * Gets a server type by name.
+	 *
+	 * @param name	Then name of the server type
+	 * @return		A ServerType
+	 */
 	public static ServerType getByName(String name) {
 		for (ServerType serverType : serverTypes) {
 			if (serverType.getName().equals(name)) {

src/net/knarcraft/serverlauncher/userinterface/GUI.java

@@ -1,5 +1,6 @@
 package net.knarcraft.serverlauncher.userinterface;
 
+import net.knarcraft.serverlauncher.Main;
 import net.knarcraft.serverlauncher.profile.Collection;
 import net.knarcraft.serverlauncher.server.Server;
 import net.knarcraft.serverlauncher.profile.Profile;
@@ -93,6 +94,11 @@ public class GUI implements ActionListener {
      */
     public void setStatus(String text) {
         this.lblStatuslabel.setText(text);
+        try (PrintWriter file = new PrintWriter(new FileWriter(Main.getAppDir() + File.separator + "latestrun.log", true))) {
+            file.println(text);
+        } catch (IOException e ) {
+            e.printStackTrace();
+        }
     }
 
     /**

src/net/knarcraft/serverlauncher/userinterface/ServerTab.java

@@ -38,7 +38,7 @@ public class ServerTab implements ActionListener {
         this.chckbxEnabled.setSelected(enabled);
         this.serverTypes.setSelectedItem(typeName);
         this.serverTypes();
-        this.serverTypes.setSelectedItem(serverVersion);
+        this.serverVersions.setSelectedItem(serverVersion);
         this.maxRam.setSelectedItem(maxRam);
     }