AttachCapabilitiesExample.class

public class AttatchCapabilities {

    public static final ArrayList<Class<?>> SALTYCLASSES = new ArrayList<Class<?>>();
    public static final List<Class<?>> CLASSESTOIGNORE = new ArrayList<Class<?>>();

    /* Assume the following code is ran during postInit
        for (ItemStack i : OreDictionary.getOres("salt")) {
            SALTYCLASSES.add(i.getClass());
            System.out.println(i.getItem().getClass().getName() + " is salt");
        }
        for (ItemStack i : OreDictionary.getOres("dustSalt")) {
            SALTYCLASSES.add(i.getClass());
            System.out.println(i.getItem().getClass().getName() + " is dustSalt");
        }
        for (ItemStack i : OreDictionary.getOres("itemSalt")) {
            SALTYCLASSES.add(i.getClass());
            System.out.println(i.getItem().getClass().getName() + " is itemSalt");
        }
        for (ItemStack i : OreDictionary.getOres("foodSalt")) {
            SALTYCLASSES.add(i.getClass());
            System.out.println(i.getItem().getClass().getName() + " is foodSalt");
        }
    */



    @SubscribeEvent
    public void onItemCreate(AttachCapabilitiesEvent.Item event) {
        if (event.getItemStack().hasCapability(SaltExampleCapability, null){
            return; //no need to add a capability to something that already has it
        }
        for (Class ig : CLASSESTOIGNORE) {
            if (ig.isInstance(event.getItem())) {
                return; //the class is ignored so the capability isn't added
            }
        }
        for (Class c : Main.SALTYCLASSES) {
            if (c.isInstance(event.getItem())) {
                if (!event.getItemStack().hasCapability(SaltExampleCapability, null)) {
                    //add the capability
                    event.addCapability(Bla bla bla this is an example); //add SaltExampleCapability
                }
            }
        }
    }
}