Use gradle. Use standard Java project layout. Changed package name.

src/main/java/dev/esophose/playerparticles/command/CommandModule.java

@@ -0,0 +1,85 @@
+package dev.esophose.playerparticles.command;
+
+import java.util.List;
+
+import dev.esophose.playerparticles.manager.LangManager;
+import dev.esophose.playerparticles.manager.LangManager.Lang;
+import dev.esophose.playerparticles.particles.PPlayer;
+
+public interface CommandModule {
+
+    /**
+     * Called when this command gets executed
+     * 
+     * @param pplayer The PPlayer who executed this command
+     * @param args The arguments to this command
+     */
+    void onCommandExecute(PPlayer pplayer, String[] args);
+
+    /**
+     * Called when a player tries to tab complete this command
+     * 
+     * @param pplayer The PPlayer who is tab completing this command
+     * @param args Arguments typed so far
+     * @return A list of possible argument values
+     */
+    List<String> onTabComplete(PPlayer pplayer, String[] args);
+
+    /**
+     * Gets the name of this command
+     * 
+     * @return The name of this command
+     */
+    String getName();
+
+    /**
+     * Gets the Lang description of this command
+     * 
+     * @return The description of this command
+     */
+    Lang getDescription();
+
+    /**
+     * Gets any arguments this command has
+     * 
+     * @return The arguments this command has
+     */
+    String getArguments();
+
+    /**
+     * True if this command requires the player to have any effects
+     * 
+     * @return If the player must have effects to use this command
+     */
+    boolean requiresEffects();
+
+    /**
+     * @return true if this command can be executed from console, otherwise false
+     */
+    boolean canConsoleExecute();
+    
+    /**
+     * Displays a command's usage to the player
+     * 
+     * @param pplayer The PPlayer to display the command usage to
+     * @param command The command to display usage for
+     */
+    static void printUsage(PPlayer pplayer, CommandModule command) {
+        LangManager.sendMessage(pplayer, Lang.COMMAND_DESCRIPTIONS_USAGE, command.getName(), command.getArguments());
+    }
+    
+    /**
+     * Displays a command's usage (with its description) to the player
+     * 
+     * @param pplayer The PPlayer to display the command usage to
+     * @param command The command to display usage for
+     */
+    static void printUsageWithDescription(PPlayer pplayer, CommandModule command) {
+        if (command.getArguments().length() == 0) {
+            LangManager.sendSimpleMessage(pplayer, Lang.COMMAND_DESCRIPTIONS_HELP_1, command.getName(), LangManager.getText(command.getDescription()));
+        } else {
+            LangManager.sendSimpleMessage(pplayer, Lang.COMMAND_DESCRIPTIONS_HELP_2, command.getName(), command.getArguments(), LangManager.getText(command.getDescription()));
+        }
+    }
+
+}