Resolve IntelliJ recommended defects and increment paper version

pom.xml

@@ -15,7 +15,7 @@
         <dependency>
             <groupId>com.destroystokyo.paper</groupId>
             <artifactId>paper-api</artifactId>
-            <version>1.14.1-R0.1-SNAPSHOT</version>
+            <version>1.14.2-R0.1-SNAPSHOT</version>
         </dependency>
     </dependencies>
 

src/main/java/com/alttd/altitudeapi/commands/CommandArgumentBuilder.java

@@ -133,7 +133,7 @@ public class CommandArgumentBuilder<T>
 
     public static <T> CommandArgumentBuilder<T> createBuilder(Class<T> type)
     {
-        return new CommandArgumentBuilder<T>();
+        return new CommandArgumentBuilder<>();
     }
 
 }

src/main/java/com/alttd/altitudeapi/commands/ValidBaseCommand.java

@@ -170,7 +170,7 @@ public abstract class ValidBaseCommand extends ValidCommand
      * @param sender the sender of the command.
      * @param label  the labels that this command has.
      */
-    public void help(CommandSender sender, String label[])
+    public void help(CommandSender sender, String[] label)
     {
         List<ValidCommand> allowedSubs = new LinkedList<>();
         for (ValidCommand sub : subCommands)

src/main/java/com/alttd/altitudeapi/commands/ValidCommand.java

@@ -261,7 +261,7 @@ public abstract class ValidCommand
             }
             else
             {
-                return Arrays.asList();
+                return Collections.emptyList();
             }
         }
         else
@@ -473,11 +473,11 @@ public abstract class ValidCommand
      */
     protected boolean matches(String label)
     {
-        label = label.toLowerCase();
         if (label == null)
         {
             return false;
         }
+        label = label.toLowerCase();
         if (label.equals(getName()))
         {
             return true;

src/main/java/com/alttd/altitudeapi/utils/CollectionUtils.java

@@ -198,7 +198,7 @@ public class CollectionUtils
      */
     public static <T> T randomValue(Collection<T> collection)
     {
-        return randomValue(collection, null);
+        return randomValue(collection, (T) null);
     }
 
     /**
@@ -210,6 +210,7 @@ public class CollectionUtils
      *
      * @return a random value from the collection.
      */
+    @SafeVarargs
     public static <T> T randomValue(Collection<T> collection, T... ignored)
     {
         // if it's null or empty, we don't care

src/main/java/com/alttd/altitudeapi/utils/StringUtils.java

@@ -11,7 +11,7 @@ public class StringUtils
 
         for (int i = start; i < end; i++)
         {
-            sb.append(strings[i] + " ");
+            sb.append(strings[i]).append(" ");
         }
 
         return sb.toString().trim();
@@ -20,10 +20,7 @@ public class StringUtils
     public static String[] add(String[] array, String add)
     {
         String[] values = new String[array.length + 1];
-        for (int i = 0; i < array.length; i++)
+        System.arraycopy(array, 0, values, 0, array.length);
-        {
-            values[i] = array[i];
-        }
         values[array.length] = add;
         return values;
     }
@@ -49,11 +46,11 @@ public class StringUtils
             return str;
         }
 
-        final int newCodePoints[] = new int[strLen]; // cannot be longer than
+        final int[] newCodePoints = new int[strLen]; // cannot be longer than
         // the char array
         int outOffset = 0;
         newCodePoints[outOffset++] = newCodePoint; // copy the first codepoint
-        for (int inOffset = Character.charCount(firstCodepoint); inOffset < strLen;)
+        for (int inOffset = Character.charCount(firstCodepoint); inOffset < strLen; )
         {
             final int codepoint = str.codePointAt(inOffset);
             newCodePoints[outOffset++] = codepoint; // copy the remaining ones

src/main/java/com/alttd/altitudeapi/utils/items/ItemDb.java

@@ -259,15 +259,11 @@ public class ItemDb
         try (final BufferedReader reader = new BufferedReader(new FileReader(file)))
         {
             final List<String> lines = new ArrayList<>(9000);
-            String line = null;
+            String line;
-            do
+            while ((line = reader.readLine()) != null)
             {
-                if ((line = reader.readLine()) == null)
-                {
-                    break;
-                }
                 lines.add(line);
-            } while (true);
+            }
             return lines;
         }
         catch (IOException ex)