Java

Which if the following is true about overriding and overloading?

		1.Overriding always apply to methods in a parent and child class and overloading always applies to methods in the same class.
		2.Overriding always apply to methods in a parent and child class and overloading can applies to methods in the same class.
		3.Both overloading and overriding refer to methods in a parent/child class relationship.
		4.Both overloading and overriding must refer to methods in the same class.