Hopefully with working functionality

src/main/java/xyz/tronax/repairall/RepairAll.java

@@ -1,17 +1,38 @@
 package xyz.tronax.repairall;
 
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandExecutor;
 import org.bukkit.plugin.java.JavaPlugin;
+import xyz.tronax.repairall.commands.CMD_repairall;
 
 public final class RepairAll extends JavaPlugin {
 
+    public static String prefix = "§cRepair§7All §8| ";
+
     @Override
     public void onEnable() {
         // Plugin startup logic
+        cmdmsg(prefix + " §aPlugin started successfully!");
+
+        registerCmd("repairall", new CMD_repairall());
 
     }
 
+
+
     @Override
     public void onDisable() {
         // Plugin shutdown logic
+        cmdmsg(prefix + " §cPlugin stopped successfully!");
+    }
+
+
+    public void cmdmsg(String msg) {
+        Bukkit.getConsoleSender().sendMessage(msg);
+    }
+
+
+    private void registerCmd(String CommandName, CommandExecutor CommandClass) {
+        getCommand(CommandName).setExecutor(CommandClass);
     }
 }

src/main/java/xyz/tronax/repairall/commands/CMD_repairall.java

@@ -0,0 +1,55 @@
+package xyz.tronax.repairall.commands;
+
+import org.bukkit.Bukkit;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.Damageable;
+import org.bukkit.inventory.meta.ItemMeta;
+import xyz.tronax.repairall.RepairAll;
+
+public class CMD_repairall implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
+        if(!(sender instanceof Player)) {
+            sender.sendMessage(RepairAll.prefix + " §cYou are not a player!");
+        } else {
+            Player p = (Player) sender;
+
+            ItemStack[] items = p.getInventory().getContents();
+            ItemStack[] armor = p.getInventory().getArmorContents();
+
+            for(int i = 0; i < items.length; i++) {
+                ItemStack e = items[i];
+                if(e != null) {
+                    ItemMeta me = e.getItemMeta();
+                    Damageable mee = (Damageable) me;
+                    mee.setDamage(0);
+                    e.setItemMeta(mee);
+                }else{
+
+                }
+            }
+            for(int i = 0; i < armor.length; i++) {
+                ItemStack a = armor[i];
+                if(a != null) {
+                    ItemMeta ae = a.getItemMeta();
+                    Damageable aee = (Damageable) ae;
+                    aee.setDamage(0);
+                    a.setItemMeta(aee);
+                } else {
+
+                }
+
+            }
+
+            p.sendMessage(RepairAll.prefix + "§aAll your items have been repaired!");
+            Bukkit.getConsoleSender().sendMessage(RepairAll.prefix + "§4" +  p.getName().toString() + " §ahas repaired all his items!");
+
+        }
+
+        return false;
+    }
+}

src/main/resources/plugin.yml

@@ -5,3 +5,12 @@ api-version: '1.20'
 authors: [TronaxYT]
 description: Repairs all your items
 website: https://tronax.xyz
+commands:
+  repairall:
+    description: Repairs all of your items!
+    permission: repairall.repair
+    permission-message: '§cRepair§7All §8| §cYou are not allowed to do this!'
+    aliases:
+      - ra
+      - repall
+      - rall