Example Application for ItemDamageEvent

import net.minecraft.item.ItemArmor;
import net.minecraftforge.fml.common.Mod;

@Mod(modid = "safearmourdrops", version = "1.0")
public class SafeArmourDrops {
    /**
     * Listens to ItemDamageEvent for ItemArmor items.
     * If the item is an ItemArmor item, and the DamageSource is either an explosion or fire, cancel the event.
     * This protects all ItemArmor drops from being destroyed by lava, fire, or explosions.
     */
    @Mod.EventHandler
    public final void onItemDropped(EntityItemDamageEvent event) {
        if (!event.getEntityItem().getItem().isEmpty() && event.getEntityItem().getItem().getItem() instanceof ItemArmor) {
            if (event.getSource().isExplosion() || event.getSource().isFireDamage()) {
                event.setCanceled(true);
            }
        }
    }
}