how to get arrow

[dntdbt]

@auto-reply-bot (object instanceof Java.type("net.minecraft.item.ItemArrow")) ?

[DreamWasFucked]

doesnt work

[dntdbt]

@auto-reply-bot
think you meant shooted arrow
so, shooted arrow = entity

(object instanceof Java.type("net.minecraft.entity.projectile.EntityArrow"))

[DreamWasFucked]

i mean i need to get how many arrows in the inventory

like this:

function getArrowsAmount() {
    var amount = 0;
    for(i = 9; i < 45; ++i) {
        stack = mc.thePlayer.inventoryContainer.getSlot(i).getStack();
        if (stack != null && stack instanceof Arrow) {
            amount += stack.stackSize;
        }
    }
    return amount;
}

[Co丶Dynamic]

@auto-reply-bot I think that's unnecessary to find out how many arrows currently in your inventory

[dntdbt]

@auto-reply-bot think, getStack() breaks the instance of arrow
try this

var Arrow = Java.type("net.minecraft.item.ItemArrow");

function getArrowsAmount() {
    var amount = 0;
    for (i = 9; i < 45; ++i) {
        var slot = mc.thePlayer.intentoryContainer.getSlot(i);
        if (slot != null && slot instanceof Arrow) {
            amount += slot.stack.stackSize;
        }
    }
    return amount;
}

[Co丶Dynamic]

@dntdbt
that's strange
no ItemArrow at all

[DreamWasFucked]

net.minecraft.item.ItemArrow does not exist

[dntdbt]

@co丶dynamic was looking in 1.12 sources
weird, there are ItemArrow exists

[quadro]

net.minecraft.init.Items -> public static final Item arrow
recommended reading: minecraft source code

edit: also accomplishable by checking unlocalized item name