CoreCrop

public abstract class CoreCrop extends BlockCrops
{
    protected String name;

    public CoreCrop(String name)
    {
        this.name = name;

        setUnlocalizedName(this.name);
        setRegistryName(this.name);
    }

    public String getName()
    {
        return name;
    }

    @Override
    public boolean onBlockActivated(World world, BlockPos pos, IBlockState state, EntityPlayer player, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ)
    {
        if(state == withAge(getMaxAge()))
        {
            world.getBlockState(pos).getBlock().harvestBlock(world, player, pos, state, null, ItemStack.EMPTY);
            world.setBlockState(pos, getDefaultState(), 3);
            return true;
        }

        return false;
    }

    @Override
    protected abstract int getBonemealAgeIncrease(World world);

    @Override
    public abstract Item getSeed();

    @Override
    public abstract Item getCrop();

    @Override
    public abstract int getMaxAge();

    @Override
    public abstract boolean isMaxAge(IBlockState state);

    @Override
    public abstract AxisAlignedBB getBoundingBox(IBlockState state, IBlockAccess source, BlockPos pos);

    @Override
    protected abstract PropertyInteger getAgeProperty();

    @Override
    protected abstract BlockStateContainer createBlockState();
}