Random Enchantments

I am making a plugin that will add random enchantments to the item in your hand when you right click a sign.
I have gotten the plugin to work but at the moment i can only add 1 enchantment when you right click the sign.
This plugin basically just makes a sign act as a enchantment table for a op server.
Currently this is how i am enchanting the item:

Code:java

        int swordench = r.nextInt(15) +1;
        int enchlev = r.nextInt(30) +1;
 
        if(e.getAction() == Action.RIGHT_CLICK_BLOCK){
 
            if(e.getClickedBlock().getType() == Material.WALL_SIGN) {
 
                Sign sign = (Sign) b.getState();
 
                if(sign.getLine(0).equalsIgnoreCase("[DazeEnchant]") && sign.getLine(1).equalsIgnoreCase("Sword")){
 
                    if(player.getInventory().getItemInHand().getType().equals(Material.DIAMOND_SWORD)){
 
                        if(player.getInventory().getItemInHand().getEnchantments().size() == 0) {
                            ItemMeta im = player.getItemInHand().getItemMeta();
 
                                if(swordench == 1){
 
                                    im.addEnchant(Enchantment.DAMAGE_ALL, enchlev, true);
                                    player.getItemInHand().setItemMeta(im);
 
                                }else if(swordench == 2){
 
                                    im.addEnchant(Enchantment.KNOCKBACK, enchlev, true);
                                    player.getItemInHand().setItemMeta(im);
 
 
                                }else if(swordench == 3){
 
                                    im.addEnchant(Enchantment.FIRE_ASPECT, enchlev, true);
                                    player.getItemInHand().setItemMeta(im);
 
                                }else if(swordench == 4){
 
                                    im.addEnchant(Enchantment.DAMAGE_ARTHROPODS, enchlev, true);
                                    player.getItemInHand().setItemMeta(im);
 
                                }else if(swordench == 5){
 
                                    im.addEnchant(Enchantment.DAMAGE_UNDEAD, enchlev, true);
                                    player.getItemInHand().setItemMeta(im);
 
                                }else if(swordench == 6){
 
                                    im.addEnchant(Enchantment.LOOT_BONUS_MOBS, enchlev, true);
                                    player.getItemInHand().setItemMeta(im);
 
                                }else if(swordench == 7){
 
                                    im.addEnchant(Enchantment.KNOCKBACK, enchlev, true);
                                    player.getItemInHand().setItemMeta(im);
 
                                }

I need a more effective way of choosing the random enchantment but i dont know how to do this.
I want a way of randomizing how many lines of enchantments will be put on the item too.

 

99storm2 The magic method that will solve your issues if you know how. No spoon feeding please.

 

Alright thanks that link should help ill figure it out fireblast709