ModScreens.java:22: error: incompatible types: cannot infer type-variable(s) M,U

[DWyvern]

I'm struggling to try and figure out why I'm receiving this error when doing a gradlew build

D:\Projects\ModAlpha6.0\src\main\java\com\dwyvern\modalpha\init\ModScreens.java:22: error: incompatible types: cannot infer type-variable(s) M,U
                        MenuScreens.register(ModContainers.ELEPHANT_INVENTORY_CONTAINER.get(), ElephantInventoryScreen::new);
                                            ^
    (argument mismatch; cannot infer functional interface descriptor for ScreenConstructor<ElephantInventoryContainer,U>)
  where M,U are type-variables:
    M extends AbstractContainerMenu declared in method <M,U>register(MenuType<? extends M>,ScreenConstructor<M,U>)
    U extends Screen,MenuAccess<M> declared in method <M,U>register(MenuType<? extends M>,ScreenConstructor<M,U>)

When I execute runClient from within Eclipse (2021-12 4.22.0), it compiles, runs, and functions correctly without any issue.  but when I run gradlew build from the command prompt to generate the jar file for the mod, I receive the above error.  Does anyone know why this is happening and how I should fix it?

Here are some of the class Contents:
 

public class ModContainers
{
    public static final DeferredRegister<MenuType<?>> CONTAINER = DeferredRegister.create(ForgeRegistries.CONTAINERS, Reference.MOD_ID);
    
    public static final RegistryObject<MenuType<ElephantInventoryContainer>> ELEPHANT_INVENTORY_CONTAINER  = CONTAINER.register("elephant_inventory_container", () -> new MenuType<>(ElephantInventoryContainer::new));

}
public class ModScreens
{
    public static void registerScreens(FMLClientSetupEvent event)
    {
        event.enqueueWork(() -> {
            MenuScreens.register(ModContainers.ELEPHANT_INVENTORY_CONTAINER.get(), ElephantInventoryScreen::new);
        });
    }

public class ElephantInventoryScreen extends AbstractContainerScreen<ElephantInventoryContainer>
{    
    private static final ResourceLocation TEXTURE_BG = new ResourceLocation(Reference.MOD_ID + ":textures/gui/container3x9.png");

    public ElephantInventoryScreen(ElephantInventoryContainer container, Inventory playerInventory, Component title)
    {
        super(container, playerInventory, title);
    }

...

}

public class ElephantInventoryContainer extends AbstractContainerMenu
{

    public ElephantInventoryContainer(int id, Inventory playerInv)
    {

        super(ModContainers.ELEPHANT_INVENTORY_CONTAINER.get(), id);
    }

...
}

 

Any guidance or suggestions is much appreciated.

 

Thank you. 

Edited March 14, 2022 by diesieben07
code tag

[DWyvern]

I should have came to this forum sooner. 🙂

I've been racking my brain over why this was happening for a couple days now. You are correct.  Specifying the Parameter Type solved the issue.

            MenuScreens.register(ModContainers.ELEPHANT_INVENTORY_CONTAINER.get(), (MenuScreens.ScreenConstructor<ElephantInventoryContainer, ElephantInventoryScreen>) ElephantInventoryScreen::new);
 

 

Thank you very much diesieben07

[DWyvern]

I guess what I did was more along the lines of casting, but it allowed gradle to build, so I'm content now.