InventoryAPI

Description
This API allows developers to create GUIs very simple and fast. The API supports any type of inventory. Every item has its own ItemListener. When a player clicks an item, the ItemListener will be activated. All names and descriptions can be customized.

Features

• easy creation of menus
• all types of inventories
• fully customizable
• easy to create items
• ItemListener
• multiple pages
• supports colors with "&"
• JavaDocs

API

Methods
Create an Inventory:

Inventory inv = InventoryAPI.createInventory(name, type);

Add an item:

inv.setSlot(slot, item, ItemListener);

Create an item:

ItemStack item = InventoryAPI.createItem(name, description, material, enchantments, amount);

Open the inventory:

inv.open(player);

Examples
A single-page inventory that will open when the player types "/inv":

import java.util.Arrays;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.inventory.InventoryType;
import net.virushd.inventory.inventory.Inventory;
import net.virushd.inventory.inventory.ItemListener;
import net.virushd.inventory.main.InventoryAPI;

public class Normal implements CommandExecutor {
 
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        Player p = (Player) sender;
        if (cmd.getName().equalsIgnoreCase("inv")) {
 
            // first we have to create the inventory
            Inventory exampleInventory = InventoryAPI.createInventory("&aExample-Inventory", InventoryType.HOPPER);
    
            // now we can add the items
    
            // add an item named "Diamonds!!!"
            exampleInventory.setSlot(0, InventoryAPI.createItem("&bDiamonds!!!", null , Material.DIAMOND, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) { // here you can write everything you want
                    p.setHealth(0.0D); // for example kill the player
                }
            });
    
            // add some more items
            exampleInventory.setSlot(1, InventoryAPI.createItem("&cBread", null, Material.BREAD, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    p.getInventory().addItem(InventoryAPI.createItem(null, null, Material.BREAD, null, 10));
                }
            });
            exampleInventory.setSlot(2, InventoryAPI.createItem("&cMessage", Arrays.asList("&7Send a message to everyone."), Material.SIGN, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    for (Player players : Bukkit.getOnlinePlayers()) {
                        players.sendMessage("hi guys");
                    }
                }
            });
    
            // open the inventory
            exampleInventory.open(p);
        }
        return true;
    }
}

An inventory with multiple pages that will open when the player types "/inv":

import java.util.Arrays;


import org.bukkit.Bukkit;
import org.bukkit.GameMode;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.inventory.InventoryType;

import net.virushd.inventory.inventory.Inventory;
import net.virushd.inventory.inventory.ItemListener;
import net.virushd.inventory.main.InventoryAPI;

public class Pages implements CommandExecutor {
 
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        Player p = (Player) sender;
        if (cmd.getName().equalsIgnoreCase("inv")) {
 
            // first we have to create the inventory and its pages
            Inventory exampleInventory_1 = InventoryAPI.createInventory("&aExample-Inventory &7- &c1", InventoryType.DISPENSER);
            Inventory exampleInventory_2 = InventoryAPI.createInventory("&aExample-Inventory &7- &c2", InventoryType.DISPENSER);
      
            // now we can add the items for the first page
      
            // first we have to add the item to go to the next page
            exampleInventory_1.setSlot(8, InventoryAPI.createItem("&cForward", Arrays.asList("&7This will open the next page."), Material.ARROW, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    exampleInventory_2.open(p);
                }
            });
      
            // add some more items
            exampleInventory_1.setSlot(0, InventoryAPI.createItem("&cBread", null, Material.BREAD, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    p.getInventory().addItem(InventoryAPI.createItem(null, null, Material.BREAD, null, 10));
                }
            });
            exampleInventory_1.setSlot(1, InventoryAPI.createItem("&cMessage", Arrays.asList("&7Send a message to everyone."), Material.SIGN, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    for (Player players : Bukkit.getOnlinePlayers()) {
                        players.sendMessage("hi guys");
                    }
                }
            });
      
            // now we can add the items for the second page
      
            // the item to go to the previous page
            exampleInventory_2.setSlot(6, InventoryAPI.createItem("&cBackward", Arrays.asList("&7This will open the previous page."), Material.ARROW, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    exampleInventory_1.open(p);
                }
            });
      
            // add some more items
            exampleInventory_2.setSlot(0, InventoryAPI.createItem("&cCreative", Arrays.asList("&7Set your gamemode to Creative."), Material.DIAMOND_SWORD, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    p.setGameMode(GameMode.CREATIVE);
                }
            });
            exampleInventory_2.setSlot(1, InventoryAPI.createItem("&cSurvival", Arrays.asList("&7Set your gamemode to Survival."), Material.WOOD_SWORD, null, 1), new ItemListener() {
                @Override
                public void onItemClick(Player p) {
                    p.setGameMode(GameMode.SURVIVAL);
                }
            });
      
            // open the first page
            exampleInventory_1.open(p);
        }
        return true;
    }
}

Thank you for choosing InventoryAPI;)
(Send me a message if you have any issue or some improvement suggestions.)