private final Class<? extends TileEntityMachine> tileEntityClass;

public MyClass(Class<? extends TileEntityMachine> tileEntityClass) {
	this.tileEntityClass = tileEntityClass;
}

// My function got creating a new instance of the TileEntity.
public Class<? extends TileEntity> getTileEntity() {
            return tileEntityClass.newInstance();
        } catch(Exception e) {
            e.printStackTrace();
        }

        return null;
    }
}