Method equals

src/main/java/org/bukkit/material/MaterialData.java:95–104

(Object obj)

    }

    @Override
    public boolean equals(Object obj) {
        if (obj != null && obj instanceof MaterialData) {
            MaterialData md = (MaterialData) obj;

            return (md.getItemTypeId() == getItemTypeId() && md.getData() == getData());
        } else {
            return false;
        }
    }
}