Fix checkstyle violations

src/main/java/com/onarandombox/MultiverseCore/commands/CreateCommand.java

@@ -29,7 +29,8 @@ public class CreateCommand extends MultiverseCommand {
     public CreateCommand(MultiverseCore plugin) {
         super(plugin);
         this.setName("Create World");
-        this.setCommandUsage("/mv create" + ChatColor.GREEN + " {NAME} {ENV}" + ChatColor.GOLD + " -s [SEED] -g [GENERATOR[:ID]] -t [WORLDTYPE] [-n] -a [true|false]");
+        this.setCommandUsage(String.format("/mv create %s{NAME} {ENV} %s-s [SEED] -g [GENERATOR[:ID]] -t [WORLDTYPE] [-n] -a [true|false]",
+                ChatColor.GREEN, ChatColor.GOLD));
         this.setArgRange(2, 11); // SUPPRESS CHECKSTYLE: MagicNumberCheck
         this.addKey("mvcreate");
         this.addKey("mvc");

src/main/java/com/onarandombox/MultiverseCore/commands/ImportCommand.java

@@ -130,10 +130,10 @@ public class ImportCommand extends MultiverseCommand {
         String generator = CommandHandler.getFlag("-g", args);
         String typeString = CommandHandler.getFlag("-t", args);
         boolean allowStructures = true;
-            String structureString = CommandHandler.getFlag("-a", args);
-            if (structureString != null) {
-                allowStructures = Boolean.parseBoolean(structureString);
-            }
+        String structureString = CommandHandler.getFlag("-a", args);
+        if (structureString != null) {
+            allowStructures = Boolean.parseBoolean(structureString);
+        }
         boolean useSpawnAdjust = true;
         for (String s : args) {
             if (s.equalsIgnoreCase("-n")) {

src/main/java/com/onarandombox/MultiverseCore/enums/AllowedPortalType.java

@@ -10,7 +10,7 @@ package com.onarandombox.MultiverseCore.enums;
 import org.bukkit.PortalType;
 
 /**
- * Custom enum that adds all/none for allowing
+ * Custom enum that adds all/none for allowing portal creation.
  */
 public enum AllowedPortalType {
     /**

src/main/java/com/onarandombox/MultiverseCore/listeners/MVPortalListener.java

@@ -45,7 +45,7 @@ public class MVPortalListener implements Listener {
 
     /**
      * This is called when a portal is created as the result of another world being linked.
-     * @param event
+     * @param event The event where a portal was formed due to a world link
      */
     @EventHandler
     public void portalForm(PortalCreateEvent event) {