Can we inherit the private methods and objects of a public class ?

Answer 1

No. first,A top-level class cannot be private or protected. It can have either public or no modifier. If it does not have a modifier it is supposed to have a default access. If a top level class is declared as private/protected the compiler will complain that the modifier private is not allowed here.
private - Only the current class will have access to the field or method.

protected - Only the current class and subclasses (and sometimes also same-package classes) of this class will have access to the field or method.

public - Any class can refer to the field or call the method.

Answer 2

'When one class is inherited from another class, it inherits all of the superclass' non-private variables and methods.'
Go check look inheritance step 2

Answer 3

nope

Answer 4

Just try it.

Answer 5

No

Answer 6

I think only objects you can inherit