Create UpdateCheck Function

src/main/java/lau/NovelDL/Main.java

@@ -34,6 +34,7 @@ public static void main(String[] args) throws InterruptedException {
                         "| | \\  | | |_| | | |/ /    | |___  | |___  | |_| | | |___  \n" +
                         "|_|  \\_| \\_____/ |___/     |_____| |_____| |_____/ |_____| "
         );
+        UpdateCheck.updateCheck();
         System.out.print("Enter the first page URL of the novel: ");
         firstPageURL = KotlinFunctionsKt.readln().trim();
         try {
@@ -65,7 +66,7 @@ public static void main(String[] args) throws InterruptedException {
         try { // First dumping
             String s = replacer(Weber.getWebString(currentPageURL, "UTF-8"));
             charset = NovelInfosKt.getCharset(s);
-            if (charset != "UTF.8")
+            if (!charset.equals("UTF.8"))
                 s = replacer(Weber.getWebString(currentPageURL, charset));
             String chapter = NovelInfosKt.getChapterTitle(s);
             fileOutputStream.write(chapter.getBytes(StandardCharsets.UTF_8));
@@ -77,7 +78,7 @@ public static void main(String[] args) throws InterruptedException {
         } catch (IOException e) {
             System.out.println(e.getMessage());
         } catch (HTTPException e) {
-            System.out.println(dumpCount + " FAILED:Target website responsed Code " + e.getStatusCode());
+            System.out.println(dumpCount + " FAILED:Target website responded Code " + e.getStatusCode());
         } catch (NullPointerException e) {
             System.out.println("It doesn't seem to be a novel. Do your IP got banned?");
             return;
@@ -98,7 +99,7 @@ public static void main(String[] args) throws InterruptedException {
             } catch (IOException e) {
                 System.out.println(e.getMessage());
             } catch (HTTPException e) {
-                System.out.println(dumpCount + " FAILED:Target website responsed Code " + e.getStatusCode());
+                System.out.println(dumpCount + " FAILED:Target website responded Code " + e.getStatusCode());
             } catch (NullPointerException e) {
                 System.out.println(dumpCount + " FAILED:It doesn't seem to be a novel. REDUMPING IN 10 SECONDS...");
                 Thread.sleep(10000);

src/main/java/lau/NovelDL/UpdateCheck.java

@@ -0,0 +1,30 @@
+package lau.NovelDL;
+
+import java.io.IOException;
+
+/**
+ * NovelDL, the best application for Chinese readers
+ *
+ * @author layou233
+ */
+
+public class UpdateCheck {
+    public static String version = "1.0";
+
+    public static void updateCheck() {
+        System.out.println("Version " + version);
+        String remoteVersion;
+        try {
+            remoteVersion = Weber.getWebString("https://raw.githubusercontent.com/layou233/NovelDL/master/src/main/resources/version.txt", "UTF-8");
+        } catch (
+                IOException e) {
+            System.out.println("FAILED TO CHECK FOR UPDATES.\n" +
+                    "You can check it yourself at https://github.com/layou233/NovelDL/releases\n");
+            return;
+        }
+        if (version.equals(remoteVersion))
+            System.out.println("Nice! You are using the latest version!\n");
+        else System.out.println("THE NovelDL YOU ARE CURRENTLY USING HAS BEEN OUTDATED!\n" +
+                "Check out newer versions at https://github.com/layou233/NovelDL/releases\n");
+    }
+}

src/main/java/lau/NovelDL/Weber.java

@@ -33,7 +33,7 @@ public static String getWebString(String url, String charset) throws IOException
             InputStream is = connection.getInputStream();
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
             byte[] buffer = new byte[10485760]; // 10MiB Buffer
-            int len = 0;
+            int len;
             while ((len = is.read(buffer)) != -1) {
                 baos.write(buffer, 0, len);
             }

src/main/kotlin/lau/NovelDL/KotlinFunctions.kt

@@ -1,8 +1,5 @@
 package lau.NovelDL
 
-import java.net.URL
-import java.nio.charset.Charset
-
 /**
  * NovelDL, the best application for Chinese readers
  *