- 1 Which methods of class foo can be called without an actual instance of the class Foo?
- 2 What is wrong with the class definition hint we expect the instance variables name and health to be initialized in the constructor?
- 3 What does a subclass inherit from a superclass group of answer choices?
- 4 What is a class called that represents the most general entity in an inheritance hierarchy?
- 5 What is an instance of a class called?
- 6 What are static methods?
- 7 What do you call a constructor that accepts no arguments?
- 8 Can you call a constructor?
- 9 Can a class have multiple constructors?
- 10 What is not type of inheritance?
- 11 Do subclasses inherit private fields?
- 12 Are private methods inherited?
- 13 How can we override a method in inheritance?
- 14 Which of the following is correct about inheritance?
- 15 What must a subclass method do in order to override a superclass method?
Which methods of class foo can be called without an actual instance of the class Foo?
// calling an instance method in the class ‘ Foo ‘. Static methods are the methods in Java that can be called without creating an object of class.
What is wrong with the class definition hint we expect the instance variables name and health to be initialized in the constructor?
what is wrong with the class definition? Hint: We expect the instance variables name and health to be initialized in the constructor. The constructor parameters cannot have the same names as the instance variables.
What does a subclass inherit from a superclass group of answer choices?
d) A subclass may inherit methods and instance variables from its superclass, and may also implement its own methods and declare its own instance variables.
What is a class called that represents the most general entity in an inheritance hierarchy?
Question: A Class That Represents The Most General Entity In An Inheritance Hierarchy Is Called A/an Inheritance Class. Subclass. Default Class Superclass Question 34 1 Pts A Class That Represents A More Specific Entity In An Inheritance Hierarchy Is Called A/an Superclass Subclass.
What is an instance of a class called?
An object is an instance of a class, and may be called a class instance or class object; instantiation is then also known as construction.
What are static methods?
A static method (or static function) is a method defined as a member of an object but is accessible directly from an API object’s constructor, rather than from an object instance created via the constructor. Methods called on object instances are called instance methods.
What do you call a constructor that accepts no arguments?
No – argument constructor: A constructor that has no parameter is known as the default constructor. If we don’t define a constructor in a class, then the compiler creates default constructor (with no arguments ) for the class.
Can you call a constructor?
Invoking a constructor from a method No, you cannot call a constructor from a method. The only place from which you can invoke constructors using “this()” or, “super()” is the first line of another constructor. If you try to invoke constructors explicitly elsewhere, a compile time error will be generated.
Can a class have multiple constructors?
A class can have multiple constructors, as long as their signature (the parameters they take) are not the same. You can define as many constructors as you need. This is what constructor overloading means, that a Java class contains multiple constructors.
What is not type of inheritance?
Explanation: All classes in java are inherited from Object class. Interfaces are not inherited from Object Class. Static members are not inherited to subclass.
Do subclasses inherit private fields?
Private Members in a Superclass A subclass does not inherit the private members of its parent class. However, if the superclass has public or protected methods for accessing its private fields, these can also be used by the subclass.
Are private methods inherited?
A java private member cannot be inherited as it is available only to the declared java class. Since the private members cannot be inherited, there is no place for discussion on java runtime overloading or java overriding (polymorphism) features.
How can we override a method in inheritance?
The ability of a subclass to override a method allows a class to inherit from a superclass whose behavior is “close enough” and then to modify behavior as needed. The overriding method has the same name, number and type of parameters, and return type as the method that it overrides.
Which of the following is correct about inheritance?
Which is the correct syntax of inheritance? Explanation: Firstly, keyword class should come, followed by the derived class name. Colon is must followed by access in which base class has to be derived, followed by the base class name. And finally the body of class.
What must a subclass method do in order to override a superclass method?
What must a subclass method do in order to override a superclass method? Must use the same method name and the same parameter types.